Unemployment and work disability in individuals with chronic fatigue syndrome/myalgic encephalomyelitis: a community-based cross-sectional study from Spain

Jesús Castro-Marrero, Mónica Faro, María Cleofé Zaragozá, Luisa Aliste, Tomás Fernández de Sevilla, José Alegre, Jesús Castro-Marrero, Mónica Faro, María Cleofé Zaragozá, Luisa Aliste, Tomás Fernández de Sevilla, José Alegre

Abstract

Background: Few reports have examined the association between unemployment and work disability in Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (CFS/ME). This study explored the key determinants of work disability in a CFS/ME cohort.

Methods: A community-based prospective study included 1086 CFS/ME patients aged 18-65 years. Demographic and clinical characteristics and outcome measures were recorded. Multiple linear regression analysis was performed to identify key risk indicators of work disability.

Results: Four hundred and fifty patients with CFS/ME were employed (41.4%) and 636 were unemployed (58.6%). Older age at pain onset (OR: 1.44; 95% CI: 1. 12-1.84, autonomic dysfunction (OR: 2.21; 95% CI: 1.71-2.87), neurological symptom (OR: 1.66; 95% CI: 1. 30-2.13) and higher scores for fatigue (OR: 2.61; 95% CI: 2.01-3.39), pain (OR: 2.09; 95% CI: 1.47-2.97), depression (OR: 1.98; 95% CI: 1. 20-3.26), psychopathology (OR: 1.98; 95% CI: 1.51-2.61) and sleep dysfunction (OR: 1.47; 95% CI: 1. 14-1.90) were all associated with a higher risk of work disability due to illness.

Conclusions: Using an explanatory approach, our findings suggest that unemployment is consistently associated with an increased risk of work disability due to CFS/ME, although further more rigorous research is now needed to help in targeting interventions at the workplace.

Keywords: Chronic fatigue syndrome; Comorbidity; Myalgic encephalomyelitis; Quality of life; Unemployment; Work disability.

Conflict of interest statement

The authors declare that they have no competing interests.

References

    1. Castro-Marrero J, Sáez-Francàs N, Santillo D, Alegre J. Treatment and management of chronic fatigue syndrome/myalgic encephalomyelitis/myalgic encephalomyelitis: all roads lead to Rome. Br J Pharmacol. 2017;174:345–369. doi: 10.1111/bph.13702.
    1. Committee on the Diagnostic Criteria for ME/CFS; Board on the Health of Select Populations; Institute of Medicine . Beyond Myalgic encephalomyelitis/chronic fatigue syndrome/myalgic encephalomyelitis: redefining an illness. Washington (DC): National Academies Press (US); 2015.
    1. Buchwald D, Umali P, Umali J, et al. Chronic fatigue and the chronic fatigue syndrome/myalgic encephalomyelitis: prevalence in a Pacific northwest health care system. Ann Intern Med. 1995;123:81–88. doi: 10.7326/0003-4819-123-2-199507150-00001.
    1. Nacul LC, Lacerda E, Pheby D, et al. Prevalence of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) in three regions of England: a repeated cross-sectional study in primary care. BMC Med. 2011;28:9–91.
    1. Reyes M, Gary HE, Jr, Dobbins JG, et al. Descriptive epidemiology of chronic fatigue syndrome/myalgic encephalomyelitis: surveillance in four US cities, September 1989 through august 1993. Morbid Mortal Week Report Surveil Sum. 1997;46:1–13.
    1. Fukuda K, Strauss SE, Hickie I, et al. The chronic fatigue syndrome/myalgic encephalomyelitis: a comprehensive approach to its definition and study. Ann Inter Med. 1994;121:953–959. doi: 10.7326/0003-4819-121-12-199412150-00009.
    1. Carruthers B, Jain A, DeMeirleir K, et al. Myalgic encephalomyelitis/chronic fatigue syndrome: clinical working case definition, diagnostic and treatment protocols (Canadian case definition) J Chronic Fatigue Syndr. 2003;11:7–115. doi: 10.1300/J092v11n01_02.
    1. Castro-Marrero J, Faro M, Aliste L, et al. Comorbid conditions in chronic fatigue syndrome/myalgic encephalomyelitis: findings from a nationwide population-based cohort study. Psychosomatics. 2017;58:533–543. doi: 10.1016/j.psym.2017.04.010.
    1. Calvo N, Sàez-Francàs N, Valero S, et al. Comorbid personality disorders in chronic fatigue syndrome/myalgic encephalomyelitis patients: a marker of psychopathological severity. Actas Esp Psiquiatr. 2015;43:58–65.
    1. Anderson JS, Ferrans CE. The quality of life of persons with chronic fatigue syndrome/myalgic encephalomyelitis. J Nerv Ment Dis. 1997;185:359–367. doi: 10.1097/00005053-199706000-00001.
    1. Lloyd AR, Pender H. The economic impact of chronic fatigue syndrome/myalgic encephalomyelitis. Med J Aust. 1992;157:599–601.
    1. Jason LA, Benton MC, Valentine L, et al. The economic impact of ME/CFS: individual and societal costs. Dyn Med. 2008;7:6. doi: 10.1186/1476-5918-7-6.
    1. Nyland M, Naess H, Birkeland JS, et al. Longitudinal follow-up of employment status in patients with chronic fatigue syndrome/myalgic encephalomyelitis after mononucleosis. BMJ Open. 2014;26:e005798. doi: 10.1136/bmjopen-2014-005798.
    1. Cella M, Sharpe M, Chalder T. Measuring disability in patients with chronic fatigue syndrome/myalgic encephalomyelitis: reliability and validity of the work and social adjustment scale. J Psychosom Res. 2011;71:124–128. doi: 10.1016/j.jpsychores.2011.02.009.
    1. Kelly M, Gagne R, Newman JD, et al. Assessment of fibromyalgia and chronic fatigue syndrome/myalgic encephalomyelitis: a new protocol designed to determine work capability-chronic pain abilities determination (CPAD) Ir Med J. 2008;101:277–278.
    1. Hayes MHS, Paterson DG. Experimental development of the graphic rating method. Psychol Bull. 1921;18:98–99.
    1. Fisk JD, Ritvo PG, Ross L, et al. Measuring the functional impact of fatigue: initial validation of the fatigue impact scale. Clin Infect Dis. 1994;18:S79–S83. doi: 10.1093/clinids/18.Supplement_1.S79.
    1. Fisk JD, Doble SE. Construction and validation of fatigue impact scale for daily administration (D-FIS) Qual Life Res. 2002;11:263–272. doi: 10.1023/A:1015295106602.
    1. Alonso J, Prieto L, Antó JM. La versión española del SF-36 health survey (Cuestionario de Salud SF-36): in instrumento Para la medida de los resultados clínicos. [the Spanish version of the SF-36 health survey (the SF-36 health questionnaire): an instrument for measuring clinical results] Med Clin (Barc) 1995;104:771–776.
    1. Derogatis LR. SCL-90-R: administration, scoring & procedures manual-I for the R(evised) version. Clinical psychosomatic research. Baltimore: John Hopkins University School Medicine; 1977.
    1. Herrero MJ, Blanch J, Peri JM, et al. A validation study of the hospital anxiety and depression scale (HAD) in a Spanish population. Gen Hosp Psychiatr. 2003;25:277–283. doi: 10.1016/S0163-8343(03)00043-4.
    1. Buysse DJ, Reynolds CF, Monk TH, et al. The Pittsburgh sleep quality index: a new instrument for psychiatric practice and research. Psychiatry Res. 1989;28:193–221. doi: 10.1016/0165-1781(89)90047-4.
    1. Taylor RR, Kielhofner GW. Work-related impairment and employment-focused rehabilitation options for individuals with chronic fatigue syndrome/myalgic encephalomyelitis: a review. J Mental Health. 2005;14:253–267. doi: 10.1080/09638230500136571.
    1. Ross SD, Estok RP, Frame D, et al. Disability and chronic fatigue syndrome/myalgic encephalomyelitis: a focus on function. Arch Intern Med. 2004;164:1098–1107. doi: 10.1001/archinte.164.10.1098.
    1. Collado A, Gómez E, Coscolla R, et al. Work, family and social environment in patients with fibromyalgia in Spain: an epidemiological study: EPIFFAC study. BMC Health Serv Res. 2014;14:513. doi: 10.1186/s12913-014-0513-5.
    1. Collin SM, Crawley E, May MT, et al. The impact of CFS/ME on employment and productivity in the UK: a cross-sectional study based on the CFS/ME national outcomes database. BMC Health Serv Res. 2011;11:217. doi: 10.1186/1472-6963-11-217.
    1. Santamarina-Perez P, Eiroa-Orosa FJ, Rodríguez-Urrutia A, et al. Neuropsychological impairment in female patients with chronic fatigue syndrome/myalgic encephalomyelitis: a preliminary study. Appl Neuropsychol Adult. 2014;21:120–127. doi: 10.1080/09084282.2013.771264.
    1. Assefi NP, Coy TV, Uslan D, et al. Financial, occupational, and personal consequences of disability in patients with chronic fatigue syndrome/myalgic encephalomyelitis and fibromyalgia compared to other fatiguing conditions. J Rheumatol. 2003;30:804–808.
    1. Brown MM, Jason LA. Functioning in individuals with chronic fatigue syndrome/myalgic encephalomyelitis: increased impairment with co-occurring multiple chemical sensitivity and fibromyalgia. Dyn Med. 2007;6:6. doi: 10.1186/1476-5918-6-6.
    1. Hadlandsmyth K, Vowles K. Does depression mediate the relation between fatigue severity and disability in chronic fatigue syndrome/myalgic encephalomyelitis sufferers? J Psychosom Res. 2009;66:31–35. doi: 10.1016/j.jpsychores.2008.08.002.
    1. Knudsen AK, Henderson M, Harvey SB, et al. Long-term sickness absence among patients with chronic fatigue syndrome/myalgic encephalomyelitis. Br J Psychiatry. 2011;199:430–431. doi: 10.1192/bjp.bp.110.082974.
    1. Palstam A, Bjersing JL, Mannerkorpi K. Which aspects of health differ between working and non-working women with fibromyalgia? A cross-sectional study of work status and health. BMC Public Health. 2012;12:1076. doi: 10.1186/1471-2458-12-1076.
    1. Nacul LC, Lacerda E, Campion P, et al. The functional status and wellbeing of people with myalgic encephalomyelitis/chronic fatigue syndrome and their careers. BMC Public Health. 2011;11:402. doi: 10.1186/1471-2458-11-402.
    1. Jason LA, Porter N, Hunnell J, et al. A natural history study of chronic fatigue syndrome/myalgic encephalomyelitis. Rehabil Psychol. 2011;56:32–42. doi: 10.1037/a0022595.
    1. Jason L, Brown M, Evans M, et al. Measuring substantial reductions in functioning in patients with chronic fatigue syndrome/myalgic encephalomyelitis. Disabil Rehabil. 2011;33:589–598. doi: 10.3109/09638288.2010.503256.
    1. Unger ER, Lin JS, Tian H, et al. Multi-Site Clinical Assessment of Myalgic Encephalomyelitis/Chronic fatigue syndrome (MCAM): Design and Implementation of a Prospective/Retrospective Rolling Cohort Study. Am J Epidemiol. 2017;17:1–10.
    1. Kidd E, Brown A, McManimen S, et al. The Relationship between age and illness duration in chronic fatigue syndrome/myalgic encephalomyelitis. Diagnostics (Basel) 2016;6:E16. doi: 10.3390/diagnostics6020016.
    1. Ciccone DS, Chandler HK, Natelson BH. Illness trajectories in the chronic fatigue syndrome/myalgic encephalomyelitis: a longitudinal study of improvers versus non-improvers. J Nerv Ment Dis. 2010;198:486–493. doi: 10.1097/NMD.0b013e3181e4ce0b.

Source: PubMed

3
Sottoscrivi