Table 1. Demographics of non-runners and runners responding to the survey (N = 502).
| NRUN N = 52 |
NRUN-OA N = 62 |
RUN N = 338 |
RUN-OA N = 50 |
P-value | |
|---|---|---|---|---|---|
| Sex (%) | 0.037 | ||||
| Females | 75.0 | 69.4 | 57.1 | 64.0 | |
| Males | 25.0 | 30.6 | 42.9 | 36.0 | |
| Age (years) | 58.6 (11.4) | 63.7 (10.2) | 50.4 (7.9) | 54.8 (7.2) | <0.001 |
| BMI (kg/m2) | 25.6 (4.9) | 27.5 (5.4) | 23.8 (3.2) | 23.7 (3.1) | <0.001 |
| Level of education (%) | 0.009 | ||||
| Less than high school completion | 0 | 0 | 0.6 | 0 | |
| High school | 7.7 | 12.9 | 3.0 | 14.0 | |
| Trades certificate, vocational school diploma, apprenticeship | 17.3 | 9.7 | 7.1 | 2.0 | |
| Non-university certificate below Bachelor's level | 17.3 | 19.4 | 27.2 | 18.0 | |
| Bachelor's degree | 23.1 | 33.9 | 34.6 | 34.0 | |
| Masters degree | 23.1 | 17.7 | 20.7 | 28.0 | |
| Doctorate degree | 11.5 | 6.5 | 6.8 | 4.0 | |
| Self-reported health status (%) | <0.001 | ||||
| Excellent | 9.6 | 11.3 | 45.0 | 34.0 | |
| Very good | 50.0 | 38.7 | 44.7 | 54.0 | |
| Good | 26.9 | 32.3 | 9.8 | 10.0 | |
| Fair | 11.5 | 11.3 | 0.6 | 2.0 | |
| Poor | 1.9 | 6.5 | 0 | 0 | |
| History of knee trauma (%) | 75.0 | 45.2 | 78.4 | 40.0 | <0.001 |