PMID- 34270700 OWN - NLM STAT- MEDLINE DCOM- 20220413 LR - 20220525 IS - 1462-0332 (Electronic) IS - 1462-0324 (Print) IS - 1462-0324 (Linking) VI - 61 IP - 4 DP - 2022 Apr 11 TI - Socio-demographic determinants in the evolution of pain in inflammatory rheumatic diseases: results from ESPOIR and DESIR cohorts. PG - 1496-1509 LID - 10.1093/rheumatology/keab562 [doi] AB - OBJECTIVE: To determine whether socio-demographic factors are associated with heterogeneity in pain evolution in inflammatory rheumatic diseases (IRDs) after accounting for disease-specific characteristics in a system with universal health care. METHODS: This analysis included the data from two prospective observational cohorts of early IRDs (ESPOIR for early RA and DESIR for early SpA). Data on pain was measured, respectively, on 13 and 9 occasions spanning 10 and 6 years of follow-up using the Short-Form 36 bodily pain score for 810 participants of ESPOIR, and 679 participants of DESIR. Linear mixed models were used to characterize differences in pain evolution as a function of age (tertiles), sex, ethnicity, education, marital, and professional status, after accounting for disease-related, treatment, lifestyle, and health factors. RESULTS: While transitioning from early (disease duration