ORs associated with physical inactivity and univariable models adjusted for sex
| N | Value | N (%) of event of PI | OR (95% CI) PI | P value | Area under ROC curve (95% CI) | |
| Body height (cm) (OR per 10 units) | 173 | 154–<171 | 6 (12.8%) | |||
| 171–<180 | 6 (8.7%) | |||||
| 180–198 | 13 (22.8%) | 0.74 (0.37 to 1.45) | 0.37 | |||
| Body weight (kg) (OR per 10 units) | 172 | 50–<70 | 7 (11.1%) | |||
| 70–<80 | 5 (9.3%) | |||||
| 80–117 | 13 (23.6%) | 0.75 (0.50 to 1.12) | 0.16 | |||
| BMI | 172 | <25.0 | 11 (9.6%) | |||
| 25.0–30.0 | 12 (23.1%) | |||||
| > 30.0 | 2 (40.0%) | 0.92 (0.78 to 1.08) | 0.29 | |||
| KOOS | ||||||
| Symptoms (OR per 10 units) | 173 | 32.0–<57.1 | 5 (21.7%) | |||
| > 57.1 | 20 (13.3%) | 1.12 (0.86 to 1.47) | 0.38 | |||
| Pain (OR per 10 units) | 173 | 14.0–<88.9 | 10 (15.4%) | |||
| > 89.0 | 15 (13.9%) | 1.28 (0.98 to 1.79) | 0.13 | |||
| Sports (OR per 10 units) | 173 | 0.0–<75.0 | 14 (17.9%) | |||
| > 75.0 | 11 (11.6%) | 1.14 (0.95 to 1.37) | 0.16 | |||
| QoL (OR per 10 units) | 173 | 0.0–<62.5 | 12 (19.7%) | |||
| >62.5 | 13 (11.6%) | 1.15 (0.93 to 1.41) | 0.18 | |||
| K-SES | ||||||
| Present | 173 | 1–<7 | 7 (25.0%) | |||
| >7 | 18 (12.4%) | 1.35 (1.05 to 1.72) | 0.017 | 0.66 (0.54 to 0.78) | ||
| Future | 173 | 1–<7 | 16 (23.2%) | |||
| >7 | 9 (8.7%) | 1.20 (1.01 to 1.45) | 0.039 | 0.67 (0.55 to 0.79) | ||
| ACL-RSI (OR per 10 units) | 134 | 21–<56 | 12 (30.0%) | |||
| 56–<77 | 3 (8.8%) | |||||
| 77–119 | 6 (10.0%) | 1.19 (1.00 to 1.43) | 0.047 | 0.66 (0.54 to 0.79) | ||
| Returned to previous level of Tegner (yes/no) | 173 | Yes | 11 (13.8%) | |||
| No | 14 (15.1%) | 0.90 (0.38 to 2.17) | 0.83 |
All the tests were performed with univariable logistic regression. P values and OR and area under ROC curve (AUC) are based on original values and not on stratified groups. The OR is the ratio of the odds for an increase in the predictor of one unit. P value<0.05 indicates a statistical significance.
ACL-RSL, ACL-Return to Sport after Injury; BMI, body mass index; KOOS, Knee injury and Osteoarthritis Outcome Score; K-SES18, Knee Self-Efficacy Scale; PI, physical inactivity; ROC, receiver-operating characteristics; Tegner, Tegner Activity Scale.