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. Author manuscript; available in PMC: 2013 Mar 1.
Published in final edited form as: Accid Anal Prev. 2012 Jan 7;45:142–151. doi: 10.1016/j.aap.2011.12.005

Table 2.

Sample characteristics.

Characteristic
at the initial interview
Female
N = 337
Male
N = 207
Total
N=544

N (%) N (%) N (%)
Age
 26-35 21 (6.2) 19 (9.2) 40 (7.4)
 36-45 178 (52.8) 111 (53.6) 289 (53.1)
 46-55 100 (29.7) 56 (27.1) 156 (28.7)
 56+ 38 (11.3) 21 (10.1) 59 (10.8)
Race/Ethnicity
 Non-Hispanic white 105 (31.2) 77(37.2) 182(33.5)
 Hispanic 171 (50.7) 87(42.0) 258(47.4)
 Native American 59 (17.5) 41(19.8) 100(18.4)
 Other 2 (0.6) 2 (1.0) 4 (0.7)
Years of education
 <12 years 44 (13.1) 24(11.6) 68(12.5)
 12 years 83 (24.6) 50(24.2) 133(24.4)
 >12 years 210 (62.3) 133(64.3) 343(63.1)
Lifetime jail time resulting from DWIa
 None 29 (8.6) 12(5.8) 41(7.5)
 1-23 hours 253 (75.1) 126(60.9) 379(69.7)
 1-3 days 36 (10.7) 35(16.9) 71(13.1)
 4-30 days 14 (4.2) 23(11.1) 37(6.8)
 31+ days 5 (1.5) 11(5.3) 16(2.9)
DWIa episodes past 90 days
 None 302 (89.6) 180(87.0) 482(88.6)
 1-4 31 (9.2) 20(9.7) 51(9.4)
 5+ 4 (1.2) 7 (3.4) 11(2.0)
a

DWI = Driving while impaired