Figure 1. Injury rates and 95% confidence intervals per 1000 athlete-exposures by games, practices, and academic years, men's football, 1988–1989 through 2003–2004 (n = 30 797 game injuries, 42 355 fall practice injuries, and 10 943 spring practice injuries). Practice injury counts for 1996–1997 were imputed from adjacent years. Game time trend P = .69. Average annual change = −0.2% (95% confidence interval = −1.1, 0.7). Fall practice time trend P = .82. Average annual change = −0.4% (95% confidence interval = −3.5, 2.8). Spring practice time trend P = .03. Average annual change = −1.1% (95% confidence interval = −2.1, −0.1) .