Spraino (n=256) | Control (n=254) | Spraino versus Control | |||
Difference | Ratio* | ||||
Total exposure (hours) | 18 803 | 14 185 | |||
Events (151) | |||||
Number | 81 | 70 | |||
Incidence rate† | 4.30 (3.30 to 5.30) | 4.93 (3.68 to 6.18) | −0.62 (−2.24 to 0.99) | 0.87 (0.62 to 1.23) | |
Time loss (weeks) | 1.8 (1.3 to 2.3) | 2.8 (2.2 to 3.4) | −1.0 (−1.8 to −0.2) | 0.63 (0.44 to 0.92) | |
Non-contact events (96) | |||||
Number | 44 | 52 | |||
Incidence rate† | 2.33 (1.67 to 3.00) | 3.67 (2.54 to 4.77) | −1.38 (−2.74 to −0.02) | 0.64 (0.42 to 0.98) | |
Time loss (weeks) | 1.9 (1.1 to 2.7) | 2.7 (2.0 to 3.4) | −0.9 (−2.0 to 0.2) | 0.67 (0.41 to 1.10) | |
Severe events (50) | |||||
Number | 19 | 31 | |||
Incidence rate† | 1.01 (0.51 to 1.50) | 2.20 (1.36 to 3.04) | −1.17 (−2.13 to −0.20) | 0.47 (0.25 to 0.88) | |
Non-contact severe events (34) | |||||
Number | 12 | 22 | |||
Incidence rate† | 0.63 (0.25 to 1.02) | 1.56 (0.82 to 2.30) | −0.89 (−1.74 to −0.04) | 0.43 (0.19 to 0.97) | |
In-trial recurrent events (19) | |||||
Total exposure (hours) | 1889 | 1428 | |||
Number | 10 | 9 | |||
Incidence rate† | 5.27 (1.68 to 8.85) | 6.29 (1.81 to 10.8) | −0.99 (−6.81 to 4.84) | 0.85 (0.32 to 2.24) | |
Time loss (weeks) | 1.1 (0.5 to 1.7) | 3.5 (2.1 to 4.86) | −2.3 (−3.7 to −0.9) | 0.33 (0.15 to 0.72) |
Numbers in parenthesis represent 95% CIs.
Spraino versus control, ratio <1 indicates preventive effect.
*Incidence rate ratio or relative time-loss duration.
†Per 1000 hours of participation in primary sport.