TABLE 2—

Hospitalizations Because of Traffic Crashes Before and After Lowering the Minimum Purchasing Age

		Rate per 10 000 Populationa
	Age, y	Before Lowering of Purchase Age	After Lowering of Purchase Age	After-to-Before Incidence Rate Ratio (95% CI)	Relative After-to-Before Incidence Rate Ratio (95% CI)	P
Young men
	20–24	232.0	150.9	0.65 (0.61, 0.70)	1.00 Reference
	18–19	189.2	135.9	0.72 (0.65, 0.79)	1.10 (0.98, 1.24)	.09
	15–17	85.9	69.8	0.81 (0.75, 0.89)	1.25 (1.12, 1.40)	< .001
Young women
	20–24	103.0	76.9	0.75 (0.67, 0.83)	1.00 Reference
	18–19	93.4	66.0	0.71 (0.62, 0.81)	0.95 (0.80, 1.12)	.50
	15–17	52.9	44.2	0.84 (0.75, 0.93)	1.12 (0.96, 1.30)	.10

Note. CI = confidence interval.

^a From hospitalization data.