Table 3

Insurance claims,* rate ratios (RR) for claims per insured vehicle-year, and 95% confidence intervals (CI) by driver age and type of claim, model years 1999–2001

Driver age groups†	Bodily injury liability claims				Property damage liability claims
Driver age groups†	Insured vehicle-years	Claims	RR	95% CI	Insured vehicle-years	Claims	RR	95% CI
*Claim records from nine auto insurers during calendar years 1998–2001 for model years 1999–2001.
†Rated drivers.
‡Reference group.
16–19	602994	15358	3.32	3.26 to 3.38	746646	54886	2.13	2.11 to 2.15
20–24	1917585	29428	2.00	1.97 to 2.03	2403555	135489	1.64	1.63 to 1.65
25–29	2606488	25346	1.27	1.25 to 1.29	3338590	135356	1.18	1.17 to 1.19
30–59‡	16716602	128185	1.0‡	–	21644388	745969	1.0‡	–
60–64	1479610	9084	0.80	0.78 to 0.82	1845684	56425	0.89	0.88 to 0.90
65–69	1146822	7205	0.82	0.80 to 0.84	1416686	44898	0.92	0.91 to 0.93
70–74	911061	6788	0.97	0.95 to 0.99	1103764	40290	1.06	1.05 to 1.07
75–79	648005	5938	1.20	1.17 to 1.23	761288	34080	1.30	1.29 to 1.31
80–84	317667	3519	1.44	1.39 to 1.49	362758	20483	1.64	1.62 to 1.66
85+	109891	1515	1.80	1.71 to 1.89	124304	8964	2.09	2.05 to 2.13