Preseason elimination impact on anterior cruciate ligament injury in the National Football League

Table 2 Week by week comparison of cumulative anterior cruciate ligament tear rate for the first 8 games played

	Year	Total injuries	Total games	Rate	RR	95%CI	P value
Game 1	2020	3	16	0.188	1.071	0.348-3.302	0.904
	2015-2019	14	80	0.175
Game 2	2020	10	32	0.313	1.724	0.937-3.174	0.08
	2015-2019	29	160	0.181
Game 3	2020	13	48	0.271	1.477	0.865-2.524	0.153
	2015-2019	44	240	0.183
Game 4	2020	14	63	0.222	1.317	0.781-2.22	0.301
	2015-2019	54	320	0.169
Game 5	2020	15	77	0.195	1.237	0.745-2.055	0.412
	2015-2019	63	400	0.158
Game 6	2020	17	91	0.187	1.338	0.826-2.169	0.237
	2015-2019	67	480	0.140
Game 7	2020	19	105	0.181	1.333	0.844-2.107	0.218
	2015-2019	76	560	0.136
Game 8	2020	19	119	0.160	1.181	0.748-1.864	0.476
	2015-2019	86	636	0.135

RR: Relative risk; CI: Confidence interval.