Abstract
To determine the prevalence of work disability (WD) among patients with systemic lupus erythematosus (SLE) and its associated factors. This was a cross-sectional study involving SLE patients aged 18-56years from Universiti Kebangsaan Malaysia Medical Centre (UKMMC). Employment history was obtained from clinical interviews. WD was defined as unemployment, interruption of employment or premature cessation of employment due to SLE at any time after the diagnosis. SLE disease characteristics, presence of organ damage and Safety of Estrogens in Lupus Erythematosus National Assessment-SLE Disease Activity Index (SLEDAI) flare index were determined from the medical records. Self-reported quality of life (QoL) was performed using the Medical Outcomes Study Short Form-36 (SF-36). Demographic factors, disease characteristics, and QoL were compared between patients with and without WD using statistical analyses. A total of 215 patients were recruited and the majority were Malay (60.5%), followed by Chinese (33.5%), Indian (4.5%) and others (n=4, 1.9%). The prevalence of WD was 43.2% (n=93) with 22.3% (n=48) patients were unemployed at the time of study. Over half the patients with WD (n=51, 54.8%) had onset of disability at <5years from diagnosis. Patients with WD had significantly lower health-related QoL. The independent factors associated with WD were SLEDAI score at diagnosis, frequency of flare, Systemic Lupus International Collaborating Clinics score, being married, had lower education and lupus nephritis. We found a high rate of WD in patients with SLE and it was significantly associated with SLE-related factors, in particular higher disease activity, presence of renal involvement and organ damage.
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