Colla, Nina; Maul, Julia-Tatjana; Vallejo Yagüe, Enriqueta; Burden, Andrea Michelle; Möller, Burkhard; Nissen, Michael J; Yawalkar, Nikhil; Papagiannoulis, Eleftherios; Distler, Oliver; Ciurea, Adrian; Micheroli, Raphael (2024). Impact of blue-collar vs. white-collar occupations on disease burden in psoriatic arthritis patients: A Swiss clinical quality management in rheumatic diseases cohort study. (In Press). Clinical rheumatology Springer 10.1007/s10067-024-07077-1
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Biomechanical stress may exacerbate inflammation in psoriatic arthritis (PsA). This study aimed to investigate disease activity, work disability, and drug response/retention rates in PsA patients among two different occupation's types: blue-collar workers (BCol) with manual labor versus white-collar workers (WCol) with sedentary occupations. PsA patients registered in the Swiss cohort (SCQM) were classified as BCol or WCol workers and assessed at the initiation of a biologic or targeted synthetic disease-modifying anti-rheumatic drug (b-/tsDMARD). We compared the baseline characteristics at treatment start and the DAS28-CRP for the 1-year remission. Treatment retention was investigated using Kaplan-Meier curves and Cox regression analysis. Multivariable models were adjusted for potential confounders. Of 564 patients, 29% were BCol, and 71% were WCol workers. Baseline disease activity was comparable between both groups. BCol workers were predominantly male (79.8%) and more work disabled at baseline (84.0% vs. 27.9%; p < 0.01). One hundred seventy-four treatment courses (TCs) of 165 PsA patients were included for longitudinal analysis. Occupation did not significantly influence the achievement of DAS28-CRP remission at 1 year. Kaplan-Meier analysis (n = 671) indicated longer retention for BCol workers (mean retention duration: 3.15 years vs. 2.15 years, (p = 0.006). However, adjusted Cox regression analysis did not corroborate these findings. This study indicates that physically demanding occupations correlate with increased rates of work disability among PsA patients, while treatment response seems to be unaffected by the patients' occupation type. Additional research is required to thoroughly comprehend the relationship between physical workload, disease activity, and treatment outcomes. Key Points • This study indicates that physically demanding occupations correlate with increased rates of work disability among PsA patients. • The treatment response among of PsA patients seems unaffected by the patients' occupation type.
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