To ascertain what epidemiological variables determine whether a patient with work incapacity as a result of fibromyalgia returns to work.
A retrospective cohort study was carried out that included 412 patients with fibromyalgia under 54 years of age and classified as having a total permanent disability by the National Institute of Social Security in Madrid in 2005. Follow-up from 2005 to 2019. We studied the variables of age, sex, marital status, CFS/MCS, psychiatric diagnosis, type of social security affiliation, occupation (CNO-11) and economic amount of the disability benefit in euros/month (4 tranches are established of <500, 500-750, 750-1000 and> 1000). We analyse the impact of these variables on return to work using a binary logistic regression model.
The mean age was 45+/-7. A total of 44% did not return to another job. The variables that were significant in the multivariate study were age (OR 0.93, CI 0.90 - 0.97), association with CFS and/or MCS (OR 0.07, CI 0.02 - 0.24), occupation (OR 0, 82; IC 0.73 - 0.92) and the amount of the disability benefit (OR 0.26; IC 0.19 - 0.35).
The probability of returning to another job decreases with age (1.07 times for each year), as the amount of the disability benefit increases (3.85 times for each successive tranche), as the level of qualification required for the occupation decreases (1.21 times for each successive CON-11 code) or if there is CFS and/or MCS (12.9 times).