Table 4.

Odds ratios (ORs) and 95% confidence intervals (CIs) for age at immigration on any drug use for males and females

Variable	Female		Male
	OR	[95% CI]	OR	[95% CI]
Age at immigration (ref.: U.S. born)
<12 years	0.473*	[0.235, 0.950]	1.129	[0.631, 2.019]
12–20 years	0.386*	[0.169, 0.882]	0.255***	[0.130, 0.503]
≥21 years	0.744	[0.333, 1.663]	0.573	[0.275, 1.197]
Border (ref.: nonborder)	1.701*	[1.004, 2.882]	1.427*	[1.027, 1.984]
Age (ref.: 18–29)
30–49 years	1.151	[0.654, 2.027]	0.847	[0.569, 1.259]
≥50 years	0.925	[0.468, 1.828]	0.274***	[0.15 4, 0.486]
Education (ref.: <high school)
High school graduate	0.876	[0.540, 1.421]	0.742	[0.482, 1.143]
Some college	0.497**	[0.306, 0.806]	0.796	[0.521, 1.217]
College graduate	0.504*	[0.264, 0.963]	0.422**	[0.236, 0.753]
Marital status (ref.: single)
Married/living together	0.790	[0.488, 1.279]	0.922	[0.611, 1.391]
Separated/widowed/divorced	0.630	[0.323, 1.228]	0.900	[0.519, 1.561]
Employment (ref.: full time)
Part time or seasonal	1.242	[0.726, 2.125]	1.623*	[1.066, 2.469]
Other	0.729	[0.446, 1.193]	1.267	[0.844, 1.902]
Intercept	0.296**	[0.149, 0.588]	0.574*	[0.340, 0.971]

Note: Ref. = reference.

^*p < .05;

^**p < .01;

^***p < .001.