Table 1 Age and gender distributions of the dermatomyositis and polymyositis study groups
From: Cancer risks of dermatomyositis and polymyositis: a nationwide cohort study in Taiwan
Age | Dermatomyositis group (n = 1,012) | Polymyositis group (n = 643) | ||||
|---|---|---|---|---|---|---|
| Â | Number of cases | Male | Female | Number of cases | Male | Female |
<20 years | 162 | 50 | 112 | 31 | 14 | 17 |
20 to 39 years | 265 | 76 | 189 | 161 | 45 | 116 |
40 to 59 years | 414 | 120 | 294 | 274 | 76 | 198 |
60 to 79 years | 164 | 66 | 98 | 169 | 61 | 108 |
≥ 80 years | 7 | 3 | 4 | 8 | 3 | 5 |
All | 1,012 | 315 | 697 | 643 | 199 | 444 |