5. Psychosocial Distress – Psycho-oncology
5.1 Quality of Life and its Assessment
Psychosocial distress, symptoms, and functional limitations are grouped under the concept quality of life [126], [127]. The concept of health-related quality of life encompasses a wide range of aspects such as physical complaints, functional abilities, activities, family well-being, psychological well-being, treatment satisfaction, body image, sexuality, social function, and satisfaction [128]. According to current understanding, health-related quality of life is a multidimensional, subjective and dynamic construct [129] with at least three dimensions: physical functioning/symptoms, psychological and mental functioning, and social functioning.
In the assessment of quality of life, patients are asked about various symptoms, complaints or subjective limitations in functionality with the use of standardized questionnaires [130]. Among the most common instruments used in oncology are the EORTC QLQ C30 inventory [131] as well as the FACT [132]. In addition to the more symptom-oriented questionnaires, there are also methods that allow subjective weighting of relevant quality-of-life aspects, such as the SEIQOL by Waldron et al. [133]. Furthermore, there are a number of generic, i.e. independent of diagnosis, quality of life assessment methods. Probably the best known method is the SF-36 [134]. To date, there are good reviews of the quality of life instruments currently available [135], [136], [137].
In the methods of the EORTC Quality of Life Group (http://groups.eortc.be/qol/) or the FACT working group of D. Cella (http://www.facit.org/), a basic survey is usually carried out by means of a core questionnaire (EORTC QLQ C30 or FACT-G) which assesses quality of life in a differentiated and multidimensional approach. Specific problems related to different diagnosis groups, special forms of treatment or the exacerbation of certain symptoms or other partial aspects of quality of life are collected via modules. For this purpose, different categories of modules are available. Initially, diagnosis-specific modules were developed to capture the special problems of individual diagnosis groups (e.g. breast cancer, bronchial Ca, cervix, etc.). In further development, treatment-specific modules (e.g., high-dose therapy) and symptom-specific modules (e.g., anemia, fatigue, etc.) were created. Core modules (e.g. information, patient satisfaction, spirituality) include the assessment of general treatment and diagnosis areas. The survey instruments of the EORTC Quality of Life Group and the FACT Working Group can be downloaded from the websites.
Figure 1 (Figure 1) shows a graphical overview (source: [130]):
The standardized questionnaires for assessing quality of life are suitable for cross-sectional surveys as well as for longitudinal measurements with the aim of mapping changes. The availability of reference or norm comparison values allows the interpretation of the found characteristics with regard to different disease groups or normal populations [130].
Computer-assisted methods in quality-of-life assessment open up new possibilities for use in clinical routine as well. Via computer-adapted testing based on touch screen technologies or mobile apps, the number of questions to be answered can be reduced due to an algorithm based on the difficulty of the individual questions. This allows the creation of an individual quality-of-life profile based on only a few questions which, for example, can be of great benefit in the area of palliative care [130].
5.2 Physical, Mental, Social and Spiritual/Religious Problems
Cancer patients are confronted with physical, psychological, social, and spiritual/religious problems. These needs shall be taken into account in the psycho-oncological care.
- Consensus
- Strong consensus (100%)
Change note
Cancer patients face physical, psychological, social and spiritual/religious problems. These should be taken into account in the care provided.Physical problems
Physical problems include physical weakness, exhaustion (fatigue), lack of physical performance; Pain such as wound and scar pain; Sleep problems such as difficulty falling asleep and staying asleep, nightmares; Lack of appetite, uneasieness, nausea, vomiting, diarrhea; Weight changes such as weight gain, weight loss, and cachexia; Swallowing problems; Respiratory problems such as dyspnea, cough; Fever, sweating, dizziness; Skin changes, inflammation around the mouth, bleeding, itching, body odor that is difficult to control and visible physical changes [138], [140], [141], [142], [143], [144], [145], [146], [147], [148], [149], [150], [151], [152], [153], [154], [155], [156], [157], [158], [159], [160], [161], [162], [163], [164], [165], [166], [167].
Mental health problems
Mental health problems can be described as impairments of general mental wellbeing (distress); anxiety, fear, worry, brooding, fear of the progression or recurrence of the disease (fear of progression/recurrence), fear of death, phobias, existential and social fears; furthermore, depression, despondency, grief, demoralization, drive disorders, social withdrawal, guilt, self-reproach, suicidal tendencies, helplessness and hopelessness, and loss of sense of dignity. Mental health problems also include self-esteem problems, self-efficacy problems, body image problems, shame, anger and resentment, aggression, dissatisfaction with treatment and medical staff, and maladaptive attributions of causality and control [168], [169], [170]. In addition to distress of the partner, children and relatives, distress of the medical staff can also occur [138], [155], [168], [169], [170], [171], [172], [173], [174], [175], [176], [177], [178], [179], [180], [181], [162], [182], [183], [184], [185], [186], [187], [188], [189], [190], [191], [192], [193], [194], [195], [196], [197].
Psychological distress, pain, and physical dysfunction are closely interrelated. Thus, psychological distress can increase pain perception and perceived limitations due to physical dysfunction, and in turn, severe pain and physical dysfunction can increase psychological distress.
Social problems
Social problems include loneliness, isolation, social exclusion and discrimination, communication barriers and conflicts in social interactions with family, relatives and friends, impaired decision-making ability, problems in the context of a trusting cooperation with medical and nursing staff (compliance) and lack of support when in need of help. Furthermore, financial burdens, problems at work and in the context of returning to work, as well as additional individual social burdens should be mentioned [138], [198], [199], [200], [201], [202], [203], [204], [205], [206], [207].
Spiritual/religious problems
Religion and spirituality can have both a protective as well as burdening nature in the context of cancer. Spiritual and religious problems include loss of faith, doubt, hopelessness and loss of meaning, as well as pronounced feelings of guilt, fears of judgement or punishment based on religious values, problems coping with illness, fears of death, and ethical conflicts in the hospital [138], [208], [209], [210].
5.3 Psycho-oncological Relevant Dysfunctions
The physical, psychological and social problems can lead to numerous dysfunctions that require psycho-oncological care or joint-care.
Physical dysfunction
Physical dysfunctions include: movement and mobility (limited mobility, limited arm range of motion); sensory impairments (sensory disturbances, polyneuropathies, impaired sense of smell and taste, balance disorders, vision changes, speech disorders), voice disorders; gastrointestinal and urologic dysfunctions (digestive disorders, bladder and bowel incontinence, micturition disorders, bowel dysfunction, swallowing disorders); sexual dysfunction (impaired libido, lack of lubrication, erectile dysfunction, pain during intercourse, premature menopause, infertility) and cognitive impairments (attention, concentration, and memory problems, fine motor skills, mental fatigue) [138], [211], [212], [213], [214], [215], [216], [217], [218], [219], [220], [221], [222], [223], [224], [225], [226], [227], [228], [229], [230], [231].
Psychological dysfunction
Psychological dysfunction includes limitations in emotional functioning and emotional role functioning; difficulties connecting with others; limitations in problem-solving skills and coping with the illness (including. problems in finding meaning and purpose, in developing a combative attitude, in self-encouragement and self-affirmation, in accepting the illness, in seeking information and distraction); lack of ability to mobilize social support; problems with lifestyle modification; and limitations in the ability to enjoy [138], [232], [233], [234], [235], [236], [237], [238].
Social dysfunction
Social dysfunction manifests as impairments in the activities of daily living: limitations in independent living and self-care (washing, dressing, meal preparation); limitations in mobility (leaving home, running errands, transportation, doctor's visits); educational and occupational limitations (work productivity, performance, extent of employment, physical work demands, psychosocial work demands, problems with supervisors, stress). In addition, limitations related to child care, family and social interaction, and taking care of dependents, as well as limitations in leisure activities and use of health care services [138], [239], [240], [241].
5.4 The Frequency of Subsyndromal Mental Distress
Common subsyndromal symptoms in cancer patients include distress, anxiety, fear of progression/recurrence, and depressiveness.
- Consensus
- Strong consensus (100%)
Change note
Common subsyndromal stresses in cancer patients include distress, anxiety, progression anxiety, and depressivity.Subsyndromal mental distress is subthreshold distress that falls below the cut-off value of the diagnostic criteria according to ICD-10 or DSM-IV. In cancer patients, they include general mental stress (distress), anxiety, especially fear of progression/recurrence, and depressiveness. Depressiveness is understood to be a depressed mood that promotes the development of a depressive mood or a depressive episode.
A general high level of mental stress (dstress) occurs with up to 59% of cancer patients [180], [181], [242], [243]. Severe anxiety is found in up to 48% of cancer patients [244], [245]. Thereby, the fear of recurrence and progression of the disease plays a significant role and occurs in up to 32% of cancer patients [246]. Depressiveness and dejection occur in up to 58% of cancer patients, often together with high anxiety [180], [181], [242], [243], [244], [245], [246], [247], [248], [249], [250].
References
[126] Fayers, Peter, Machin, David, Quality of Life: Assessment, Analysis and InterpretationWiley & Sons, 2000. p. 416.
[127] Kassianos, Angelos P., Tsounta, Stephanie, Defining Quality of Life, in Handbook of Quality of Life in Cancer, Kassianos, Angelos P. , Editor. 2022, Springer International Publishing: Cham. p. 3-5., https://doi.org/10.1007/978-3-030-84702-9_1
[128] Cella, D. F., Tulsky, D. S., Quality of life in cancer: definition, purpose, and method of measurement, Cancer investigation, 1993. 11(3): p. 327-336., https://pubmed.ncbi.nlm.nih.gov/8485655/
[129] Koller, Michael, Lorenz, Wilfried, Quality of life: a deconstruction for clinicians, Journal of the Royal Society of Medicine, 2002. 95(10): p. 481-488., https://pubmed.ncbi.nlm.nih.gov/12356967/
[130] Weis, Joachim, Krankheitsverarbeitung und Lebensqualität, in Onkologische Pflege, 2008, Thieme: Stuttgart. p. 332-340.
[131] Aaronson, N. K., Ahmedzai, S., Bergman, B., Bullinger, M., Cull, A., Duez, N. J., et.al. The European Organization for Research and Treatment of Cancer QLQ-C30: a quality-of-life instrument for use in international clinical trials in oncology, Journal of the National Cancer Institute, 1993. 85(5): p. 365-376., https://pubmed.ncbi.nlm.nih.gov/8433390/
[132] Cella, D. F., Tulsky, D. S., Gray, G., Sarafian, B., Linn, E., Bonomi, A., et.al. The Functional Assessment of Cancer Therapy scale: development and validation of the general measure, J. Clin. Oncol., 1993. 11(3): p. 570-579., https://pubmed.ncbi.nlm.nih.gov/8445433/
[133] Waldron, D., O'Boyle, C. A., Kearney, M., Moriarty, M., Carney, D., Quality-of-life measurement in advanced cancer: assessing the individual, J. Clin. Oncol., 1999. 17(11): p. 3603-3611., https://pubmed.ncbi.nlm.nih.gov/10550160/
[134] Bullinger, M., Gesundheitsbezogene Lebensqualität und subjektive Gesundheit. Überblick über den Stand der Forschung zu einem neuen Evaluationskriterium in der Medizin, PPmP, 1997. 47: p. 76-91.
[135] Bengel, Jürgen, Wirtz, Markus, Zwingmann, Christian, Diagnostische Verfahren in der RehabilitationHogrefe-Verlag, 2008. 5: p. 390., https://www.hogrefe.com/de/shop/diagnostische-verfahren-in-der-rehabilitation-65858.html#1+1
[136] Fayers, P., Hays, R., Assessing quality of life in clinical trials: methods and practiceOxford University Press, 2005., https://global.oup.com/academic/product/assessing-quality-of-life-in-clinical-trials-9780198527695?cc=de&lang=en&
[137] Schumacher, Jörg, Klaiberg, Antje, Brähler, Elmar, Diagnostische Verfahren zu Lebensqualität und WohlbefindenHogrefe-Verlag, 2003. p. 329., https://www.hogrefe.com/de/shop/diagnostische-verfahren-zu-lebensqualitaet-und-wohlbefinden-65364.html#1+1
[138] Breitbart, William, Psycho-oncologyOxford University Press, 2021., https://doi.org/10.1093/med/9780190097653.001.0001
[139] Mehnert, Anja, Koch, Uwe, Mehnert-Theuerkauf, Anja, Handbuch PsychoonkologieHogrefe, 2016.
[140] Baracos, Vickie E., Cancer-associated cachexia and underlying biological mechanisms, Annual review of nutrition, 2006. 26: p. 435-461., https://pubmed.ncbi.nlm.nih.gov/16602932/
[141] Barton-Burke, Margaret, Cancer-related fatigue and sleep disturbances. Further research on the prevalence of these two symptoms in long-term cancer survivors can inform education, policy, and clinical practice, The American journal of nursing, 2006. 106(3 Suppl): p. 72-77., https://pubmed.ncbi.nlm.nih.gov/16481861/
[142] Behl, Deepti, Jatoi, Aminah, Pharmacological options for advanced cancer patients with loss of appetite and weight, Expert Opinion on Pharmacotherapy, 2007. 8(8): p. 1085-1090., https://pubmed.ncbi.nlm.nih.gov/17516872/
[143] Breitbart, William S., Alici, Yesne, Delirium, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 332-339., https://pubmed.ncbi.nlm.nih.gov/19968451/
[144] Breitbart, William S., Alici, Yesne, Fatigue, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 236-244., https://doi.org/10.1093/med/9780195367430.003.0032
[145] Breitbart, William S., Park, Jessica, Katz, Aviva M., Pain, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 215-228., https://doi.org/10.1093/med/9780195367430.003.0030
[146] Deandrea, S., Montanari, M., Moja, L., Apolone, G., Prevalence of undertreatment in cancer pain. A review of published literature, Annals of Oncology: Official Journal of the European Society for Medical Oncology / ESMO, 2008. 19(12): p. 1985-1991., https://pubmed.ncbi.nlm.nih.gov/18632721/
[147] Kouse, Robert S., Gastrointestinal Cancer, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 140-145.
[148] Lawrence, Donald P., Kupelnick, Bruce, Miller, Kimberly, Devine, Deirdre, Lau, Joseph, Evidence report on the occurrence, assessment, and treatment of fatigue in cancer patients, Journal of the National Cancer Institute. Monographs, 2004. p. 40-50., https://pubmed.ncbi.nlm.nih.gov/15263040/
[149] McVey, P., Nausea and vomiting in the patient with advanced cancer: an overview of prevalence, causes and assessment, Collegian (Royal College of Nursing, Australia), 2001. 8(1): p. 40-42., https://doi.org/10.1016/S1322-7696(08)60403-5
[150] Nail, L. M., Winningham, M. L., Fatigue and weakness in cancer patients: the symptoms experience, Seminars in Oncology Nursing, 1995. 11(4): p. 272-278., https://pubmed.ncbi.nlm.nih.gov/8578035/
[151] Paice, Judith A., Chronic treatment-related pain in cancer survivors, Pain, 2011. 152(3 Suppl): p. 84-89., https://pubmed.ncbi.nlm.nih.gov/21036475/
[152] Paice, Judith A., Ferrell, Betty, The management of cancer pain, CA: A Cancer Journal for Clinicians, 2011. 61(3): p. 157-182., https://pubmed.ncbi.nlm.nih.gov/21543825/
[153] Roscoe, Joseph A., Kaufman, Maralyn E., Matteson-Rusby, Sara E., Palesh, Oxana G., Ryan, Julie L., Kohli, Sadhna, et.al. Cancer-related fatigue and sleep disorders, The Oncologist, 2007. 12 Suppl 1: p. 35-42., https://pubmed.ncbi.nlm.nih.gov/17573454/
[154] Roth, A. J., Carter, Jeanne, Nelson, Christian J., Sexuality after Cancer, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 245-250., https://doi.org/10.1093/med/9780195367430.003.0033
[155] Roth, Andrew J., Weiss, Talia R., Psychiatric Emergencies, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 297-302., https://doi.org/10.1093/med/9780199363315.003.0035
[156] Sateia, Michael J., Lang, Bianca J., Sleep and cancer: recent developments, Current Oncology Reports, 2008. 10(4): p. 309-318., https://pubmed.ncbi.nlm.nih.gov/18778557/
[157] Singer, S., Kuhnt, S., Zwerenz, R., Eckert, K., Hofmeister, D., Dietz, A., et.al. Age- and sex-standardised prevalence rates of fatigue in a large hospital-based sample of cancer patients, British Journal of Cancer, 2011. 105(3): p. 445-451., https://pubmed.ncbi.nlm.nih.gov/21750551/
[158] van den Beuken-van Everdingen, M. H., de Rijke, J. M., Kessels, A. G., Schouten, H. C., van Kleef, M., Patijn, J., Prevalence of pain in patients with cancer: a systematic review of the past 40 years, Annals of Oncology: Official Journal of the European Society for Medical Oncology / ESMO, 2007. 18(9): p. 1437-1449., https://pubmed.ncbi.nlm.nih.gov/17355955/
[159] De Waele, S., Van Belle, S., Cancer-related fatigue, Acta Clinica Belgica, 2010. 65(6): p. 378-385.
[160] Wagner, L. I., Cella, D., Fatigue and cancer: causes, prevalence and treatment approaches, British Journal of Cancer, 2004. 91(5): p. 822-828., https://pubmed.ncbi.nlm.nih.gov/15238987/
[161] Yue, Herbert J., Dimsdale, Joel E., Sleep and Cancer, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 258-269.
[162] Mehnert, A., Hartung, T. J., Friedrich, M., Vehling, S., Brähler, E., Härter, M., et.al. One in two cancer patients is significantly distressed: Prevalence and indicators of distress, Psycho-oncology, 2018. 27(1): p. 75-82., https://pubmed.ncbi.nlm.nih.gov/28568377/
[163] van den Beuken-van Everdingen, MH, Hochstenbach, LM, Joosten, EA, Tjan-Heijnen, VC, Janssen, DJ, Update on Prevalence of Pain in Patients With Cancer: Systematic Review and Meta-Analysis., J Pain Symptom Manage, 2016. 51 (6)(6): p. 1070-1090.e9., https://pubmed.ncbi.nlm.nih.gov/27112310/
[164] Mogavero, Maria Paola, DelRosso, Lourdes M., Fanfulla, Francesco, Bruni, Oliviero, Ferri, Raffaele, Sleep disorders and cancer: State of the art and future perspectives, Sleep Medicine Reviews, 2021. 56: p. 101409., https://pubmed.ncbi.nlm.nih.gov/33333427/
[165] van der Haak, Natalie, Edwards, Suzanne, Perem, Merike, Landorf, Emma, Osborn, Michael, Nutritional Status at Diagnosis, During, and After Treatment in Adolescents and Young Adults with Cancer, Journal of adolescent and young adult oncology, 2021., https://pubmed.ncbi.nlm.nih.gov/33844931/
[166] Hariyanto, Timotius Ivan, Kurniawan, Andree, Appetite problem in cancer patients: Pathophysiology, diagnosis, and treatment, Cancer treatment and research communications, 2021. 27: p. 100336., https://pubmed.ncbi.nlm.nih.gov/33607591/
[167] Demark-Wahnefried, Wendy, Schmitz, Kathryn H., Alfano, Catherine M., Bail, Jennifer R., Goodwin, Pamela J., Thomson, Cynthia A., et.al. Weight management and physical activity throughout the cancer care continuum, CA: a cancer journal for clinicians, 2018. 68(1): p. 64-89., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5766382
[168] Kredentser, Maia S., Chochinov, Harvey Max, Psychotherapeutic Considerations for Patients With Terminal Illness, American journal of psychotherapy, 2020. 73(4): p. 137-143., https://pubmed.ncbi.nlm.nih.gov/33086864/
[169] Pahl, Daniel A., Wieder, Matthew S., Steinberg, Dara M., Social isolation and connection in adolescents with cancer and survivors of childhood cancer: A systematic review, Journal of adolescence, 2021. 87: p. 15-27., https://pubmed.ncbi.nlm.nih.gov/33450464/
[170] Roland, Katherine B., Rodriguez, Juan L., Patterson, Jennifer Rees, Trivers, Katrina F., A literature review of the social and psychological needs of ovarian cancer survivors, Psycho-oncology, 2013. 22(11): p. 2408-2418., https://pubmed.ncbi.nlm.nih.gov/23760742/
[171] Andrykowski, Michael A., Kangas, Maria, Posttraumatic Stress Disorder Associated with Cancer Diagnosis and Treatment, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth S., Editors. 2010, Oxford University Press. p. 348-357.
[172] Brintzenhofe-Szoc, Karlynn M., Levin, Tomer T., Li, Yuelin, Kissane, David W., Zabora, James R., Mixed anxiety/depression symptoms in a large cancer cohort: prevalence by cancer type, Psychosomatics, 2009. 50(4): p. 383-391., https://pubmed.ncbi.nlm.nih.gov/19687179/
[173] Epstein, Lucy A., Smith, Felicia A., Stern, Theodore A., Somatoform Disorders and Factitious Illness/Malingering in the Oncology Setting, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press. p. 358-362., http://dx.doi.org/10.1093/med/9780195367430.003.0048
[174] Herschbach, P., Keller, M., Knight, L., Brandl, T., Huber, B., Henrich, G., et.al. Psychological problems of cancer patients: a cancer distress screening with a cancer-specific questionnaire, British Journal of Cancer, 2004. 91(3): p. 504-511., https://pubmed.ncbi.nlm.nih.gov/15238979/
[175] Levin, Tomer T., Alici, Yesne, Anxiety Disorders, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 324-331.
[176] Pessin, Haley, Amakawa, Lia, Breitbart, William S., Suicide, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 319-323., https://doi.org/10.1093/med/9780195367430.003.0043
[177] Rogak, Lauren J., Starr, Tatiana D., Passik, Steven D., Substance Abuse and Alcohol, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 340-347., https://www.researchgate.net/publication/300114109_Substance_Abuse_and_Alcohol
[178] Stark, D., Kiely, M., Smith, A., Velikova, G., House, A., Selby, P., Anxiety disorders in cancer patients: their nature, associations, and relation to quality of life, Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology, 2002. 20(14): p. 3137-3148., https://pubmed.ncbi.nlm.nih.gov/12118028/
[179] Steinberg, Tracy, Roseman, Michelle, Kasymjanova, Goulnar, Dobson, Sarah, Lajeunesse, Lucie, Dajczman, Esther, et.al. Prevalence of emotional distress in newly diagnosed lung cancer patients, Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer, 2009. 17(12): p. 1493-1497., https://pubmed.ncbi.nlm.nih.gov/19343372/
[180] Zabora, J., BrintzenhofeSzoc, K., Curbow, B., Hooker, C., Piantadosi, S., The prevalence of psychological distress by cancer site, Psychooncology, 2001. 10(1): p. 19-28., https://pubmed.ncbi.nlm.nih.gov/11180574/
[181] Zwahlen, D., Hagenbuch, N., Jenewein, J., Carley, M. I., Buchi, S., Adopting a family approach to theory and practice: measuring distress in cancer patient-partner dyads with the distress thermometer, Psycho-Oncology, 2011. 20(4): p. 394-403., https://pubmed.ncbi.nlm.nih.gov/20878839/
[182] Aaronson, Neil K., Mattioli, Vittorio, Minton, Ollie, Weis, Joachim, Johansen, Christoffer, Dalton, Susanne O., et.al. Beyond treatment - Psychosocial and behavioural issues in cancer survivorship research and practice, EJC supplements : EJC : official journal of EORTC, European Organization for Research and Treatment of Cancer, 2014. 12(1): p. 54-64., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4250535
[183] Yang, Y, Li, W, Wen, Y, Wang, H, Sun, H, Liang, W, et.al. Fear of cancer recurrence in adolescent and young adult cancer survivors: A systematic review of the literature., Psychooncology, 2019. 28 (4)(4): p. 675-686., https://pubmed.ncbi.nlm.nih.gov/30703261/
[184] Simard, Sébastien, Thewes, Belinda, Humphris, Gerry, Dixon, Mélanie, Hayden, Ceara, Mireskandari, Shab, et.al. Fear of cancer recurrence in adult cancer survivors: a systematic review of quantitative studies, Journal of cancer survivorship : research and practice, 2013. 7(3): p. 300-322., https://pubmed.ncbi.nlm.nih.gov/23475398/
[185] Sharpe, L., Curran, L., Butow, P., Thewes, B., Fear of cancer recurrence and death anxiety, Psycho-oncology, 2018. 27(11): p. 2559-2565., https://pubmed.ncbi.nlm.nih.gov/29843188/
[186] Geue, Kristina, Brähler, Elmar, Faller, Hermann, Härter, Martin, Schulz, Holger, Weis, Joachim, et.al. Prevalence of mental disorders and psychosocial distress in German adolescent and young adult cancer patients (AYA), Psycho-oncology, 2018. 27(7): p. 1802-1809., https://pubmed.ncbi.nlm.nih.gov/29644783/
[187] Hartung, T. J., Brähler, E., Faller, H., Härter, M., Hinz, A., Johansen, C., et.al. The risk of being depressed is significantly higher in cancer patients than in the general population: Prevalence and severity of depressive symptoms across major cancer types, European journal of cancer (Oxford, England : 1990), 2017. 72: p. 46-53., https://pubmed.ncbi.nlm.nih.gov/28024266/
[188] Kuhnt, Susanne, Brähler, Elmar, Faller, Hermann, Härter, Martin, Keller, Monika, Schulz, Holger, et.al. Twelve-Month and Lifetime Prevalence of Mental Disorders in Cancer Patients, Psychotherapy and psychosomatics, 2016. 85(5): p. 289-296., https://pubmed.ncbi.nlm.nih.gov/27508418/
[189] Mehnert, Anja, Brähler, Elmar, Faller, Hermann, Härter, Martin, Keller, Monika, Schulz, Holger, et.al. Four-week prevalence of mental disorders in patients with cancer across major tumor entities, Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2014. 32(31): p. 3540-3546., https://pubmed.ncbi.nlm.nih.gov/25287821/
[190] Soleimani, Mohammad Ali, Bahrami, Nasim, Allen, Kelly-Ann, Alimoradi, Zainab, Death anxiety in patients with cancer: A systematic review and meta-analysis, European journal of oncology nursing : the official journal of European Oncology Nursing Society, 2020. 48: p. 101803., https://pubmed.ncbi.nlm.nih.gov/32836000/
[191] Gold, Stefan M., Köhler-Forsberg, Ole, Moss-Morris, Rona, Mehnert, Anja, Miranda, J. Jaime, Bullinger, Monika, et.al. Comorbid depression in medical diseases, Nature reviews. Disease primers, 2020. 6(1): p. 69., https://pubmed.ncbi.nlm.nih.gov/32820163/
[192] Kolva, Elissa, Hoffecker, Lilian, Cox-Martin, Emily, Suicidal ideation in patients with cancer: A systematic review of prevalence, risk factors, intervention and assessment, Palliative & supportive care, 2020. 18(2): p. 206-219., https://pubmed.ncbi.nlm.nih.gov/31554521/
[193] Vehling, Sigrun, Philipp, Rebecca, Existential distress and meaning-focused interventions in cancer survivorship, Current opinion in supportive and palliative care, 2018. 12(1): p. 46-51., https://pubmed.ncbi.nlm.nih.gov/29251694/
[194] Peteet, John R., Balboni, Michael J., Spirituality and religion in oncology, CA: a cancer journal for clinicians, 2013. 63(4): p. 280-289., https://pubmed.ncbi.nlm.nih.gov/23625473/
[195] Tang, Pei-Ling, Wang, Hsiu-Hung, Chou, Fan-Hao, A Systematic Review and Meta-Analysis of Demoralization and Depression in Patients With Cancer, Psychosomatics, 2015. 56(6): p. 634-643., https://pubmed.ncbi.nlm.nih.gov/26411374/
[196] Robinson, Sophie, Kissane, David W., Brooker, Joanne, Burney, Susan, A systematic review of the demoralization syndrome in individuals with progressive disease and cancer: a decade of research, Journal of pain and symptom management, 2015. 49(3): p. 595-610., https://pubmed.ncbi.nlm.nih.gov/25131888/
[197] McFarland, Daniel C., Walsh, Leah, Napolitano, Stephanie, Morita, Jody, Jaiswal, Reena, Suicide in Patients With Cancer: Identifying the Risk Factors, Oncology (Williston Park, N.Y.), 2019. 33(6): p. 221-226., https://pubmed.ncbi.nlm.nih.gov/31219606/
[198] Lebel, S., Devins, G. M., Stigma in cancer patients whose behavior may have contributed to their disease, Future oncology (London, England), 2008. 4(5): p. 717-733., https://pubmed.ncbi.nlm.nih.gov/18922128/
[199] Lehmann, C., Koch, U., Mehnert, A., Die Bedeutung der Arzt-Patient-Kommunikation für die psychische Belastung und die Inanspruchnahme von Unterstützungsangeboten bei Krebspatienten: Ein Literaturüberblick über den gegenwärtigen Forschungsstand unter besonderer Berücksichtigung patientenseitiger Präferenzen, Psychother Psych Med, 2009. 59(7): p. 3-27., https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-2008-1067443
[200] Gordon, Louisa G., Merollini, Katharina M. D., Lowe, Anthony, Chan, Raymond J., A Systematic Review of Financial Toxicity Among Cancer Survivors: We Can't Pay the Co-Pay, The patient, 2017. 10(3): p. 295-309., https://pubmed.ncbi.nlm.nih.gov/27798816/
[201] Chan, Raymond Javan, Gordon, Louisa G., Tan, Chia Jie, Chan, Alexandre, Bradford, Natalie K., Yates, Patsy, et.al. Relationships Between Financial Toxicity and Symptom Burden in Cancer Survivors: A Systematic Review, Journal of pain and symptom management, 2019. 57(3): p. 646-660.e1., https://pubmed.ncbi.nlm.nih.gov/30550833/
[202] de Boer, AG, Torp, S, Popa, A, Horsboel, T, Zadnik, V, Rottenberg, Y, et.al. Long-term work retention after treatment for cancer: a systematic review and meta-analysis., J Cancer Surviv, 2020. 14 (2)(2): p. 135-150., https://pubmed.ncbi.nlm.nih.gov/32162193/
[203] Mehnert, Anja, Boer, Angela, Feuerstein, Michael, Employment challenges for cancer survivors, Cancer, 2013. 119 Suppl 11: p. 2151-2159., https://pubmed.ncbi.nlm.nih.gov/23695927/
[204] Grassi, Luigi, Riba, Michelle, Cancer and severe mental illness: Bi-directional problems and potential solutions, Psycho-oncology, 2020. 29(10): p. 1445-1451., https://doi.org/10.1002/pon.5534
[205] Ernst, J., Mehnert, A., Dietz, A., Hornemann, B., Esser, P., Perceived stigmatization and its impact on quality of life - results from a large register-based study including breast, colon, prostate and lung cancer patients, BMC cancer, 2017. 17(1): p. 741., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680772
[206] Esser, Peter, Mehnert, Anja, Johansen, Christoffer, Hornemann, Beate, Dietz, Andreas, Ernst, Jochen, Body image mediates the effect of cancer-related stigmatization on depression: A new target for intervention, Psycho-oncology, 2018. 27(1): p. 193-198., https://pubmed.ncbi.nlm.nih.gov/28685499/
[207] Evans Webb, Madeleine, Murray, Elizabeth, Younger, Zane William, Goodfellow, Henry, Ross, Jamie, The Supportive Care Needs of Cancer Patients: a Systematic Review, Journal of cancer education : the official journal of the American Association for Cancer Education, 2021., https://doi.org/10.1007/s13187-020-01941-9
[208] Breitbart, W., Spirituality and meaning in supportive care: spirituality- and meaning-centered group psychotherapy interventions in advanced cancer, Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer, 2002. 10(4): p. 272-280., https://pubmed.ncbi.nlm.nih.gov/12029426/
[209] Murata, Hisayuki, Spiritual pain and its care in patients with terminal cancer: construction of a conceptual framework by philosophical approach, Palliative & supportive care, 2003. 1(1): p. 15-21., https://pubmed.ncbi.nlm.nih.gov/16594284/
[210] Schreiber, J. A., Brockopp, D. Y., Twenty-five years later--what do we know about religion/spirituality and psychological well-being among breast cancer survivors? A systematic review, Journal of Cancer Survivorship: Research and Practice, 2012. 6(1): p. 82-94., https://pubmed.ncbi.nlm.nih.gov/22198806/
[211] Ahles, T. A., Correa, D. D., Neuropsychological Impact of Cancer and Cancer Treatments, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press. p. 251-257.
[212] Balduyck, B., Hendriks, J., Sardari Nia, P., Lauwers, P., Van Schil, P., Quality of life after lung cancer surgery: a review, Minerva Chirurgica, 2009. 64(6): p. 655-663., https://pubmed.ncbi.nlm.nih.gov/20029361/
[213] Cooley, Mary E., Lynch, Julie, Fox, Kilah, Sarna, Linda, Lung Cancer, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press. p. 152-159.
[214] Gilbert, Emilee, Ussher, J. M., Perz, J., Sexuality after breast cancer: a review, Maturitas, 2010. 66(4): p. 397-407., https://pubmed.ncbi.nlm.nih.gov/20439140/
[215] Kim, Sae Woong, Prostatic disease and sexual dysfunction, Korean Journal of Urology, 2011. 52(6): p. 373-378., https://pubmed.ncbi.nlm.nih.gov/21750746/
[216] Kimura, Masaki, Bañez, Lionel L., Schroeck, Florian R., Gerber, Leah, Qi, Jim, Satoh, Takefumi, et.al. Factors predicting early and late phase decline of sexual health-related quality of life following radical prostatectomy, The Journal of Sexual Medicine, 2011. 8(10): p. 2935-2943., https://pubmed.ncbi.nlm.nih.gov/21771284/
[217] Liu, Tian, Zhou, Jun, Osterman, K. Sunshine, Zhang, Pengpeng, Woodhouse, Shermian A., Schiff, Peter B., et.al. Measurements of Radiation-Induced Skin Changes in Breast-Cancer Radiation Therapy Using Ultrasonic Imaging, Conference Proceedings: ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 2008. 2: p. 718-722., https://pubmed.ncbi.nlm.nih.gov/21461130/
[218] Schagen, Sanne B., Boogerd, Willem, Muller, Martin J., Huinink, Wim Ten Bokkel, Moonen, Luc, Meinhardt, Wim, et.al. Cognitive complaints and cognitive impairment following BEP chemotherapy in patients with testicular cancer, Acta Oncologica (Stockholm, Sweden), 2008. 47(1): p. 63-70., https://pubmed.ncbi.nlm.nih.gov/17934892/
[219] Sbitti, Yassir, Kadiri, Habiba, Essaidi, Ismail, Fadoukhair, Zouhour, Kharmoun, Soussane, Slimani, Khaoula, et.al. Breast cancer treatment and sexual dysfunction: Moroccan women's perception, BMC Women's Health, 2011. 11:, https://pubmed.ncbi.nlm.nih.gov/21668971/
[220] Valentine, Alan D., Central Nervous System Tumors, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 131-134., https://doi.org/10.1093/med/9780199363315.003.0013
[221] Vance, V., Mourtzakis, M., McCargar, L., Hanning, R., Weight gain in breast cancer survivors: prevalence, pattern and health consequences, Obesity Reviews: An Official Journal of the International Association for the Study of Obesity, 2011. 12(4): p. 282-294., https://pubmed.ncbi.nlm.nih.gov/20880127/
[222] Wilmoth, Margaret Chamberlain, Coleman, Elizabeth Ann, Smith, Steven C., Davis, Carla, Fatigue, weight gain, and altered sexuality in patients with breast cancer: exploration of a symptom cluster, Oncology Nursing Forum, 2004. 31(6): p. 1069-1075., https://pubmed.ncbi.nlm.nih.gov/15547630/
[223] Wefel, Jeffrey S., Vidrine, Damon J., Veramonti, Tracy L., Meyers, Christina A., Marani, Salma K., Hoekstra, Harald J., et.al. Cognitive impairment in men with testicular cancer prior to adjuvant therapy, Cancer, 2011. 117(1): p. 190-196., https://pubmed.ncbi.nlm.nih.gov/20737560/
[224] Burch, Jennie, Taylor, Claire, Wilson, Ana, Norton, Christine, Symptoms affecting quality of life after sphincter-saving rectal cancer surgery: A systematic review, European journal of oncology nursing : the official journal of European Oncology Nursing Society, 2021. 52: p. 101934., https://pubmed.ncbi.nlm.nih.gov/33845303/
[225] Stulz, Alexandra, Lamore, Kristopher, Montalescot, Lucile, Favez, Nicolas, Flahault, Cécile, Sexual health in colon cancer patients: A systematic review, Psycho-oncology, 2020., https://pubmed.ncbi.nlm.nih.gov/32281129/
[226] Falk, Sandy J., Dizon, Don S., Sexual Health Issues in Cancer Survivors, Seminars in oncology nursing, 2020. 36(1): p. 150981., https://pubmed.ncbi.nlm.nih.gov/31983486/
[227] Buchbinder, David, Kelly, Debra Lynch, Duarte, Rafael F., Auletta, Jeffery J., Bhatt, Neel, Byrne, Michael, et.al. Neurocognitive dysfunction in hematopoietic cell transplant recipients: expert review from the late effects and Quality of Life Working Committee of the CIBMTR and complications and Quality of Life Working Party of the EBMT, Bone marrow transplantation, 2018. 53(5): p. 535-555., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5985976
[228] Kelly, Debra Lynch, Buchbinder, David, Duarte, Rafael F., Auletta, Jeffrey J., Bhatt, Neel, Byrne, Michael, et.al. Neurocognitive Dysfunction in Hematopoietic Cell Transplant Recipients: Expert Review from the Late Effects and Quality of Life Working Committee of the Center for International Blood and Marrow Transplant Research and Complications and Quality of Life Working Party of the European Society for Blood and Marrow Transplantation, Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation, 2018. 24(2): p. 228-241., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768142
[229] Schagen, S. B., Klein, M., Reijneveld, J. C., Brain, E., Deprez, S., Joly, F., et.al. Monitoring and optimising cognitive function in cancer patients: Present knowledge and future directions, EJC supplements : EJC : official journal of EORTC, European Organization for Research and Treatment of Cancer, 2014. 12(1): p. 29-40., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4250534
[230] Gałczyński, Krzysztof, Olcha, Piotr, Romanek-Piva, Katarzyna, Jóźwik, Maciej, Semczuk, Andrzej, Fertility-Sparing Methods in Adolescents Affected by Endometrial Cancer: A Comprehensive Review, Journal of clinical medicine, 2021. 10(5):, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7958602
[231] Hammermüller, C., Hinz, A., Dietz, A., Wichmann, G., Pirlich, M., Berger, T., et.al. Depression, anxiety, fatigue, and quality of life in a large sample of patients suffering from head and neck cancer in comparison with the general population, BMC cancer, 2021. 21(1): p. 94., https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7825198
[232] Brown, Linda F., Kroenke, Kurt, Cancer-related fatigue and its associations with depression and anxiety: a systematic review, Psychosomatics, 2009. 50(5): p. 440-447., https://pubmed.ncbi.nlm.nih.gov/19855028/
[233] Clark, Karen L., Loscalzo, Matthew, Trask, Peter C., Zabora, James, Philip, Errol J., Psychological distress in patients with pancreatic cancer--an understudied group, Psycho-Oncology, 2010. 19(12): p. 1313-1320., https://pubmed.ncbi.nlm.nih.gov/20119937/
[234] Katz, M. R., Rodin, G., Devins, G. M., Self-esteem and cancer: theory and research, Canadian Journal of Psychiatry. Revue Canadienne De Psychiatrie, 1995. 40(10): p. 608-615., https://pubmed.ncbi.nlm.nih.gov/8681258/
[235] Stewart, D. E., Duff, S., Wong, F., Melancon, C., Cheung, A. M., The views of ovarian cancer survivors on its cause, prevention, and recurrence, Medscape Women's Health, 2001. 6(5):, https://pubmed.ncbi.nlm.nih.gov/11698927/
[236] Warren, M., Uncertainty, lack of control and emotional functioning in women with metastatic breast cancer: a review and secondary analysis of the literature using the critical appraisal technique, European journal of cancer care, 2010. 19(5): p. 564-574., https://pubmed.ncbi.nlm.nih.gov/20735467/
[237] Esser, Peter, Kuba, Katharina, Mehnert, Anja, Johansen, Christoffer, Hinz, Andreas, Lordick, Florian, et.al. Quality of life in survivors of hematological malignancies stratified by cancer type, time since diagnosis and stem cell transplantation, European journal of haematology, 2018. 101(3): p. 340-348., https://pubmed.ncbi.nlm.nih.gov/29858505/
[238] Hinz, Andreas, Weis, Joachim, Faller, Hermann, Brähler, Elmar, Härter, Martin, Keller, Monika, et.al. Quality of life in cancer patients-a comparison of inpatient, outpatient, and rehabilitation settings, Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 2018. 26(10): p. 3533-3541., https://pubmed.ncbi.nlm.nih.gov/29700655/
[239] Mehnert, A., Employment and work-related issues in cancer survivors, Critical Reviews in Oncology/Hematology, 2011. 77(2): p. 109-130., https://pubmed.ncbi.nlm.nih.gov/20117019/
[240] Tiedtke, Corine, de Rijk, Angelique, Dierckx de Casterlé, Bernadette, Christiaens, Marie-Rose, Donceel, Peter, Experiences and concerns about 'returning to work' for women breast cancer survivors: a literature review, Psycho-Oncology, 2010. 19(7): p. 677-683., https://pubmed.ncbi.nlm.nih.gov/19823971/
[241] Visser, Annemieke, Huizinga, Gea A., van der Graaf, Winette T. A., Hoekstra, Harald J., Hoekstra-Weebers, Josette E. H. M., The impact of parental cancer on children and the family: a review of the literature, Cancer Treatment Reviews, 2004. 30(8): p. 683-694., https://pubmed.ncbi.nlm.nih.gov/15541578/
[242] Gao, Wei, Bennett, Michael I., Stark, Daniel, Murray, Scott, Higginson, Irene J., Psychological distress in cancer from survivorship to end of life care: prevalence, associated factors and clinical implications, European Journal of Cancer (Oxford, England: 1990), 2010. 46(11): p. 2036-2044., https://pubmed.ncbi.nlm.nih.gov/20447824/
[243] Li, M., Hales, S., Rodin, G. M., Adjustment Disorders, in Psycho-Oncology, Holland, Jimmie C.Breitbart, W. S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 303-310.
[244] Burgess, Caroline, Cornelius, Victoria, Love, Sharon, Graham, Jill, Richards, Michael, Ramirez, Amanda, Depression and anxiety in women with early breast cancer: five year observational cohort study, BMJ (Clinical Research Ed.), 2005. 330(7493):, https://pubmed.ncbi.nlm.nih.gov/15695497/
[245] Roy-Byrne, Peter P., Davidson, Karina W., Kessler, Ronald C., Asmundson, Gordon J. G., Goodwin, Renee D., Kubzansky, Laura, et.al. Anxiety disorders and comorbid medical illness, General Hospital Psychiatry, 2008. 30(3): p. 208-225., https://pubmed.ncbi.nlm.nih.gov/18433653/
[246] Mehnert, A., Berg, P., Henrich, G., Herschbach, P., Fear of cancer progression and cancer-related intrusive cognitions in breast cancer survivors, Psycho-Oncology, 2009. 18(12): p. 1273-1280., https://pubmed.ncbi.nlm.nih.gov/19267364/
[247] Massie, Mary Jane, Prevalence of depression in patients with cancer, Journal of the National Cancer Institute. Monographs, 2004. p. 57-71., https://pubmed.ncbi.nlm.nih.gov/15263042/
[248] Miller, Kimberly, Massie, Mary Jane, Depressive Disorders, in Psycho-Oncology, Holland, Jimmie C.Breitbart, William S.Jacobsen, Paul B.Lederberg, Marguerite S.Loscalzo, Matthew J. and McCorkle, Ruth, Editors. 2010, Oxford University Press: New York. p. 311-317.
[249] Pirl, William F., Evidence report on the occurrence, assessment, and treatment of depression in cancer patients, Journal of the National Cancer Institute. Monographs, 2004. p. 32-39., https://pubmed.ncbi.nlm.nih.gov/15263039/
[250] Wilson, Keith G., Chochinov, Harvey Max, Skirko, Merika Graham, Allard, Pierre, Chary, Srini, Gagnon, Pierre R., et.al. Depression and anxiety disorders in palliative cancer care, Journal of Pain and Symptom Management, 2007. 33(2): p. 118-129., https://pubmed.ncbi.nlm.nih.gov/17280918/