Table 1 Characteristics and demographic information of the study subjects.
Variables | Patients with hand OA (N = 1160) | Controls (N = 2227) | Statistics | P-Value |
|---|---|---|---|---|
Gender (%) | ||||
Male | 503 (43) | 967 (43) | ||
Female | 657 (57) | 1260 (57) | χ2 = 1.03 × 10–29 | 1.00 |
Age, years | 61.1 ± 7.4 | 61.4 ± 7.4 | t = − 1.04 | 0.30 |
BMI, kg/m2 | 26.3 ± 1.5 | 26.2 ± 1.5 | t = 1.80 | 0.07 |
Pain Analog Scale | 5.3 ± 2.0 | – | – | |
K-L grading (%) | ||||
KL-2 | 550 (47) | – | – | – |
KL-3 | 366 (32) | – | – | – |
KL-4 | 244 (21) | – | – | – |
