Model 2: multiple regression analysis of patient history, clinical examination and MRI variables as predictors for time to RTS including both MRI-positive and MRI-negative injuries (n=180)
| Predictor for time to RTS | β-Coefficient | 95% CI | p Value |
|---|---|---|---|
| Maximum pain score (VAS) | 1.4 | 0.5 to 2.2 | 0.002 |
| Forced to stop within 5 min (yes/no*) | 4.9 | 1.5 to 8.4 | 0.005 |
| Length of hamstring tenderness (cm) | 0.5 | 0.1 to 0.4 | 0.012 |
| Overall grading | |||
| Grade 2 | 8.1 | 3.2 to 12.9 | 0.001 |
| Grade 1 | 3.6 | −0.7 to 7.9 | 0.098 |
| Grade 0 | 0* | ||
Regression coefficients are presented as adjusted unstandardised β-coefficients with 95% CIs.
*Reference category.
RTS, return to sport, VAS, visual analogue scale.