Table 1.

Participant characteristics as a percentage of those selected from the original sample, who were not known to be deceased at the time of the 15-year follow-up.

Variable	Selected from Screening Referrals	Interviewed at 15-year follow- up	p-value
	N	N (%)
Gender
Male	1,322	285 (22)	<0.001
Female	1,137	431 (38)
Age at screening
<31	1,517	457 (30)	0.16
31+	942	259 (27)
Ethnicity
Non-Hispanic White	924	267 (29)	<0.001
Hispanic	982	305 (31)
Native American	292	96 (33)
Mexican Nationala	123	10 ( 8)
Other	138	38 (28)
Arrest warrant
No	2,224	668 (30)	0.002
Yes	235	48 (20)
Telephone
No	281	59 (21)	0.002
Yes	2,178	657 (30)
Arrest BAC
<0.15	865	250 (29)	0.92
0.15 or more	1,239	365 (29)
Unknown	355	101 (28)
Alcohol diagnosis at screening
No	1,189	365 (31)	0.08
Yes	731	214 (29)
Unknown	539	137 (25)
Screening category
Not Complete	463	112 (24)	0.03
Complete and Not Referred to treatment	965	299 (31)
Complete and Referred to treatment	1,031	305 (30)

^aSignificantly different, p< 0.05 from the other ethnicity categories