Age distribution of patients with dermatomyositis and control patients at baseline
| Characteristic | Men, no. (%)* | Women, no. (%)* | ||
|---|---|---|---|---|
| Dermatomyositis n = 514 | Control n = 2480 | Dermatomyositis n = 1088 | Control n = 5501 | |
| Age, yr, mean ± SD | 49.45 ± 15.32 | 48.45 ± 15.35 | 47.44 ± 14.37 | 46.86 ± 14.09 |
| Age group, yr | ||||
| ≥ 20, < 30 | 64 (12.45) | 348 (14.03) | 137 (12.59) | 708 (12.87) |
| ≥ 30, < 40 | 67 (13.04) | 345 (13.91) | 180 (16.54) | 956 (17.38) |
| ≥ 40, < 50 | 117 (22.76) | 569 (22.94) | 298 (27.39) | 1522 (27.67) |
| ≥ 50, < 60 | 136 (26.46) | 624 (25.16) | 252 (23.16) | 1285 (23.36) |
| ≥ 60, < 70 | 75 (14.59) | 355 (14.31) | 141 (12.96) | 684 (12.43) |
| ≥ 70, < 80 | 47 (9.14) | 207 (8.35) | 71 (6.53) | 310 (5.64) |
| ≥ 80 | 8 (1.56) | 32 (1.29) | 9 (0.83) | 36 (0.65) |
| p value | 0.9 | 0.9 | ||
Note: SD = standard deviation.
↵* Unless otherwise indicated.