Leiden EA R C | Groningen EA R C | REACH | |||||||
---|---|---|---|---|---|---|---|---|---|
All n = 807 | No arthritis n = 435 | Arthritis n = 372 | All n = 481 | No arthritis n = 214 | Arthritis n = 267 | All n = 353 | No arthritis n = 172 | Arthritis n = 181 | |
Age, mean ± SD, years | 51.4 ± 16.3 | 49.6 ± 15.5 | 53.5 ± 17.0 | 51.6 ± 16.4 | 49.0 ± 15.3 | 53.7 ± 16.9 | 48.6 ± 14.1 | 46.7 ± 11.7 | 50.3 ± 15.9 |
Female, n (%) | 574 (71) | 345 (79) | 229 (62) | 311 (65) | 145 (68) | 166 (62) | 277 (79) | 149 (87) | 128 (71) |
Gradual onset symptoms, n (%) | 499 (62) | 285 (67) | 214 (59) | 299 (63) | 140 (66) | 159 (61) | 183 (58) | 115 (71) | 68 (44) |
Morning stiffness, minutes | 10 (0–30) | 10 (0–30) | 10 (0–30) | 10 (0–30) | 10 (0–30) | 15 (0–60) | 30 (0–60) | 30 (0–60) | 30 (0–97) |
≥30 minutes, n (%) | 210 (30) | 106 (28) | 104 (32) | 146 (36) | 55 (30) | 91 (40) | 185 (53) | 87 (52) | 98 (54) |
≥60 minutes, n (%) | 129 (18) | 60 (16) | 69 (21) | 88 (22) | 27 (15) | 61 (27) | 114 (32) | 45 (27) | 68 (38) |
≥90 minutes, n (%) | 71 (10) | 27 (7) | 44 (14) | 53 (13) | 15 (8) | 38 (17) | 73 (21) | 25 (15) | 48 (27) |
Tender joint count | 7 (2–14) | 8 (3–17) | 5 (2–13) | 9 (4–18) | 9 (4–18) | 8 (3–18) | 7 (3–12) | 7 (2–12) | 7 (3–11) |
Symptom duration, weeks | 11.5 (4.0-61.0) | 19.3 (6.1-122) | 6.9 (2.7-21.6) | 18.0 (5.6-64.3) | 22.9 (6.9-74.9) | 16.6 (4.6-54.9) | 1.7 (0.8-3.2) | 2.4 (1.2-3.6) | 1.3 (0.7-2.3) |
<12 weeks symptom duration, n (%) | 380 (51) | 162 (41) | 218 (62) | 165 (39) | 70 (38) | 95 (39) | 352 (100) | 171 (100) | 181 (100) |