Table 3.

Comparison of All Anterior Cruciate Ligament Injuries by Season Segment and Sport

Sport	Preseason			Regular Season			Postseason			Incidence Rate Ratio
	No.	AEs	Rate per 10 000 AEs (95% CI)	No.	AEs	Rate per 10 000 AEs (95% CI)	No.	AEs	Rate per 10 000 AEs (95% CI)	Regular Season Versus Preseason	Postseason Versus Preseason	Regular Season Versus Postseason
All injuries
Basketball	62	437 920	1.42 (1.06, 1.77)	190	1 334 615	1.42 (1.22, 1.63)	12	86 669	1.38 (0.60, 2.17)	1.01 (0.75, 1.34)	0.98 (0.53, 1.81)	1.03 (0.57, 1.84)
Lacrosse	26	264 025	0.98 (0.61, 1.36)	99	484 455	2.04 (1.64, 2.45)	4	57 953	0.69 (0.01, 1.37)	2.08 (1.35, 3.20)a	0.70 (0.24, 2.01)	2.96 (1.09, 8.04)a
Soccer	31	426 121	0.73 (0.47, 0.98)	102	1 090 517	0.94 (0.75, 1.12)	3	100 499	0.30 (0.00, 0.64)	1.29 (0.86, 1.92)	0.41 (0.13, 1.34)	3.13 (0.99, 9.88)
Noncontact injuries
Basketball	38	437 920	0.87 (0.59, 1.14)	127	1 334 615	0.95 (0.79, 1.12)	7	86 669	0.81 (0.21, 1.41)	1.10 (0.76, 1.58)	0.93 (0.42, 2.08)	1.18 (0.55, 2.52)
Lacrosse	20	264 025	0.76 (0.43, 1.09)	69	484 455	1.42 (1.09, 1.76)	2	57 953	0.35 (0.00, 0.82)	1.88 (1.14, 2.09)a	0.46 (0.11, 1.95)	4.13 (1.01, 16.83)a
Soccer	17	426 121	0.40 (0.23, 0.55)	39	1090 517	0.36 (0.25, 0.47)	1	100 499	0.10 (0.00, 0.29)	0.90 (0.51, 1.58)	0.25 (0.03, 1.87)	3.59 (0.49, 26.16)

Abbreviations: AE, athlete-exposure; CI, confidence interval.

^aP < .05.