Table 1.
Number of subjects | |||
---|---|---|---|
Total | Male | Female | |
Hand OA material | 168a | 36 | 132 |
44 families with ≥ 2 DIP OA casesb | 116 | 22 | 94 |
4 families with 1 DIP OA caseb | 15 | 5 | 10 |
Additional radiologically verified DIP OA casesb | 9 | 4 | 5 |
Physician diagnosed hand OA casesc | 28 | 5 | 23 |
Knee OA materialb | 113 | 27 | 86 |
Controls | 436 | 277 | 159 |
Total | 689 | 335 | 354 |
a = The total number of affected individuals was 134 of which 85 were unrelated
b = Radiologically verified OA cases
c = Physician diagnosed hand OA; this group is also a part of radiological knee OA material