Figure 1. Injury rates and 95% confidence intervals per 1000 athlete-exposures by matches, practices, and academic year, men's wrestling, 1988–1989 through 2003–2004 (n = 3097 match injuries and 6626 practice injuries). Match average annual change = 1.3%; time trend, P = .21, 95% confidence interval = −0.8, 3.5. Practice average annual change = 0.5%; time trend, P = .42, 95% confidence interval = −0.8, 1.9 .
