Table 1 Patient characteristics
Variable | No RP | Primary RP | Secondary RP [subset with antibody or red flag feature] | SSc | All patients |
|---|---|---|---|---|---|
Number, n (%) | 54 (15.6) | 69 (19.9) | 172 (49.6) [101 (29.1)] | 52 (15.0) | 347 (100) |
Age, years, mean (SD) | 42.2 (14.6) | 40.6 (13.9) | 47.4 (14.0) [45.3 (14.8)] | 58.8 (14.4) | 47 (15.2) |
Female | 47 (87) | 51 (74) | 145 (84) [86 (85)] | 45 (87) | 288 (83) |
Duration of RP, months, median (IQR) | - | 61.0 (24.0, 149.0) (n = 64) | 57 (18.0, 160.0) [60 (24.0, 180.0)] (n = 154 [94]) | 70.0 (30.0, 240.0) (n = 47) | 60.0 (24.0, 166.0) (n = 265) |
Current smokers, n (%) | 9/41 (22) | 17/57 (30) | 40/146 (27) [22/87 (25)] | 7/42 (17) | 73/286(26) |
Ab positive, n (%) | 33 (61) | 0 (0) | 145 (84) [91 (90)] | 48 (92) | 226 (65) |
ANA positive, n (%) | 32 (59) | 0 (0) | 142 (83) [88 (87)] | 48 (92) | 222 (64) |
ACA positive, n (%) | 4 (7) | 0 (0) | 20 (12) [12 (12)] | 29 (56) | 53 (15) |
Scl-70 positive, n (%) | 3 (6) | 0 (0) | 7 (4) [3 (3)] | 4 (8) | 14 (4) |