Variable | Simple ordinal logistic regression | Multiple ordinal logistic regression | ||||
---|---|---|---|---|---|---|
Regression coefficient (95% CI) | P-value | Odds ratio (95% CI) | Regression coefficient (95% CI) | P-value | Odds ratio (95% CI) | |
Demographics | ||||||
Age | − 0.02 ( − 0.21 to 0.18) | 0.877 | 0.99 (0.81–1.20) | |||
Sex (male 0/female 1, reference) | − 0.53 ( − 0.99 to − 0.07) | 0.025 | 0.59 (0.37–0.94) | − 0.49 ( − 0.96 to − 0.02) | 0.042 | 0.61 (0.38–0.98) |
Earlier experience of Knee Control | 0.472 | |||||
Don’t know | − 0.54 ( − 1.38 to 0.30) | 0.204 | 0.58 (0.25–1.34) | |||
No | − 0.01 ( − 0.65 to 0.63) | 0.981 | 0.99 (0.52–1.88) | |||
Yes, sometimes during the last year | − 0.23 ( − 0.92 to 0.47) | 0.521 | 0.80 (0.40–1.59) | |||
Yes, regularly during the last year | Reference | |||||
Risk perceptions pre-intervention | ||||||
I expect I will sustain an injury sometime during this season…(1 likely–7 unlikely) | 0.06 ( − 0.11 to 0.22) | 0.507 | 1.06 (0.90–1.25) | |||
Outcome expectancies | ||||||
Pre-intervention: Many sports injuries are preventable with the help of training or protective equipment… (1 false–7 true) | 0.12 ( − 0.12 to 0.36) | 0.348 | 1.12 (0.88–1.44) | |||
Post-season: After training Knee Control this season, I think my risk of injury has… (1 increased–7 decreased) | 0.62 (0.40–0.83) | < 0.001 | 1.90 (1.50–2.29) | 0.56 (0.35–0.78) | < 0.001 | 1.75 (1.41–2.18) |
Post-season: After training Knee Control this season, I have become faster, stronger and developed better balance… (1 false–7 true) | 0.72 (0.51–0.94) | < 0.001 | 2.06 (1.66–2.56) | 0.52 (0.30–0.74) | < 0.001 | 1.68 (1.34–2.10) |
Action self-efficacy | ||||||
I have listened to my coach’s instructions on how to do the Knee Control exercises… (1 little–7 much) | 0.53 (0.35–0.72) | < 0.001 | 1.71 (1.42–2.05) | 0.24 (0.02–0.47) | 0.032 | 1.28 (1.02–1.60) |
I have been able to do all the exercises in the Knee Control programme correctly… (1 unsure–7 sure) | 0.40 (0.22–0.58) | < 0.001 | 1.49 (1.24–1.78) | |||
I have made 100% effort when we practised the Knee Control exercises… (1 false–7 true) | 0.62 (0.42–0.83) | < 0.001 | 1.87 (1.52–2.29) | 0.29 (0.03–0.54) | 0.027 | 1.33 (1.03–1.72) |
Other potential influencing factors | ||||||
Injury during season (no 0/yes 1) | − 0.14 ( − 0.58 to 0.31) | 0.550 | 0.87 (0.56–1.36) | |||
Knee Control dose | 0.025 | |||||
Low dose < 1 session per week | − 0.92 ( − 1.67 to − 0.18) | 0.015 | 0.40 (0.19–0.84) | |||
Intermediate dose ≤ 1 to < 2 sessions per week | − 0.66 ( − 1.24 to − 0.08) | 0.027 | 0.52 (0.29–0.93) | |||
High dose ≥ 2 sessions per week | Reference |