Table 1 Patient demographics in patellar instability group and control group
Variable | Patellar instability group | Control group | P value |
|---|---|---|---|
Number of patients, n | 80 | 160 | – |
Number of knees, n | 80 | 160 | – |
Sex (male: female), n | 28/52 | 56/104 | – |
Side (left: right), n | 42/38 | 90/70 | 0.702 |
Age, y | 24.1 ± 10.2 | 24.7 ± 7.5 | 0.701 |
Body mass index, kg/m2 | 23.2 ± 3.3 | 22.7 ± 3.2 | 0.495 |