Table 4 Injury rate per 1000 h of physical activity and comparison of injury rates per group
Group comparisons | Mean minutes PA per day (range min-max) | Cumulative hours of PA during 1 year per group | Number of injuries (95% CI) | Injury rate (95% CI) | IRD (95% CI) IRR (95% CI) | p-value* |
|---|---|---|---|---|---|---|
Group 0 (non-sports) + group 1 (sports 1x/wk) Vs. Group 2 (sports ≥2x/wk) | 134.6 (59–244) 171.8 (73–292) | 19,693 44,937 | 26 60 (45.8 to 77.2) | 1.32 (0.9 to 1.9) 1.33 (1.0 to 1.7) | IRD −0.015 (−0.6 to 0.6) IRR 0.99 (0.6 to 1.6) | 0.962 |
Group 0 (non-sports) Vs. Group 1 (sports 1x/wk) | 146.2 (80–244) 123.6 (59–182) | 10,674 9019 | 9 (4.1 to 17.1) 17 (9.9 to 27.2) | 0.84 (0.38 to 1.6) 1.88 (1.1 to 3.1) | IRD 1.04 (−17.1 to 17.7) IRR 0.44 (0.18 to 1.06) | 0.275 |
Group 1 (sports 1x/wk) Vs. Group 2 (sports ≥2x/wk) | 123.6 (59–182) 171.8 (73–292) | 9019 44,937 | 17 (9.9 to 27.2) 60 (45.8 to 77.2) | 1.88 (1.1 to 3.1) 1.33 (1.0 to 1.7) | IRD 0.55 (−6.3 to 17.2) IRR 0.71 (0.41 to 1.30) | 0.387 |
Group 2 (sports ≥2x/wk) Vs. Group 0 (non-sports) | 171.8 (73–292) 146.2 (80–244) | 44,937 10,674 | 60 (45.8 to 77.2) 9 (4.1 to 17.1) | 1.33 (1.0 to 1.7) 0.84 (0.38 to 1.6) | IRD 0.49 (−17.6 to 7.2) IRR 1.58 (0.78 to 3.6) | 0.295 |