Table 3.

Varying sex-differences in odds of head injuries (given an injury), by injury mechanism (player-to-player contact)

Head injuries (n = 860)	Men	Women	Women vs. Men
Other mechanisms	Ref	2.41, 95% CI = [1.82, 3.20]	2.41, 95% CI = [1.82, 3.20]
Player-to-player contact mechanisms	5.99 95% CI = [4.56, 7.88]	7.35, 95% CI = [5.58, 9.69]	1.23, 95% CI = [1.03, 1.47]

Measure of variability in sex-differences on additive scale: RERI = −0.05, 95% CI = [−4.08, 3.98]

Measure of variability in sex-differences on multiplicative scale: Ratio of ORs = 0.508, 95% CI = [0.364, 0.711]