Table 1 Critical characteristics in the unmatched and propensity score matched cohorts
Unmatched cohort | Matched cohort | |||
|---|---|---|---|---|
RA with SS | RA without SS | RA with SS | RA without SS | |
(n = 129) | (n = 970) | (n = 126) | (n = 126) | |
Female, n (%) | 129 (100) | 733 (75.6) | 126 (100) | 126 (100) |
Seropositive, n (%) | 124 (96.1) | 841 (86.7) | 123 (97.6) | 123 (97.6) |
T2T, n (%) | 107 (82.9) | 851 (87.7) | 105 (83.3) | 112 (88.9) |
Age, median (IQR) years | 51 (45–61) | 55 (46–64) | 51 (44–61) | 58 (47–64) |
RA duration, median (IQR) months | 24 (8–120) | 24 (6–84) | 24 (7–120) | 12 (4–60) |
DAS28-CRP at 1st visit, median (IQR) | 3.86 (2.78–4.74) | 3.81 (2.9–4.91) | 3.86 (2.78–4.74) | 3.66 (2.68–4.92) |