Table 1.
Baseline Characteristics of the whole cohort, runners, non-runners, and those who had imputed follow up radiographs.
| Participant Characteristics | All Participants (n = 1203) | Runners (n =138) | Non-Runners (n = 1065) | Imputed Follow up Radiographs (n = 101) |
|---|---|---|---|---|
| Age (years) | 63.2 (7.9) | 62.9 (7.3) | 63.2 (8.0) | 63.5 (7.7) |
| Sex (% Male) | 45.3% | 69.6% | 42.2% | 38.6% |
| BMI (kg/m2) | 29.5 (4.6) | 28.4 (4.0) | 29.6 (4.7) | 29.8 (5.0) |
|
| ||||
| Knee Based Characteristics | (n=1808 knees) | (n=205 knees) | (n=1603 knees) | (n=151 knees) |
|
| ||||
| KL Grade | ||||
| 2 | 63.8% | 61.5% | 64.1% | 55.0% |
| 3 | 29.3% | 29.3% | 29.3% | 40.4% |
| 4 | 7.0% | 9.3% | 6.7% | 4.6% |
| Medial JSN | ||||
| 0 | 35.3% | 33.7% | 35.5% | 25.8% |
| 1 | 35.8% | 35.1% | 35.9% | 36.4% |
| 2 | 24.2% | 25.4% | 24.0% | 34.4% |
| 3 | 4.7% | 5.9% | 4.6% | 3.3% |
| TKR by the 48 month visit | 4.3% | 3.9% | 4.3% | N/A |
| Injury that occurred between baseline to the 48 month visit during the OAI | 11.1% | 10.3% | 11.2% | 11.3% |