Table 1.

Univariate phenotypic associations (using logistic regression) between adolescent cannabis use, repeated voluntary unprotected sex (rVUS) and romantic/reproductive characteristics and individual covariates in 2,784 women aged 18-27 years. Estimates presented are Odds Ratios (OR) with their 95% Confidence Intervals [95% CI].

	Adolescent cannabis use	rVUS
Demographics
Age ≤ 21	1.38 [1.17-1.63]	0.60 [0.51-0.72]
Zygozity (MZ)	0.94 [0.79-1.11]ns, p=0.45	1.19 [1.00-1.41]p=0.05
Ethnicity (Black)	0.86 [0.68-1.09]ns, p=0.22	0.96 [0.76-1.21]ns, p=0.71
Other romantic and reproductive characteristics
Lifetime number of boyfriends ≥ 5	1.67 [1.43-1.96]	1.55 [1.30-1.83]
Age of first romantic date ≤ 14	1.89 [1.61-2.22]	1.58 [1.33-1.88]
Ever pregnant	1.47 [1.25-1.72]	3.48 [2.93-4.14]
≥3 pregnancies in those pregnant  (n=1079)	0.93 [0.70-1.24]ns, p=0.61	1.53 [1.14-2.03]
Age at first pregnancy ≤ 17 in  sthose pregnant (n=1079)	1.62 [1.25-2.08]	1.18 [0.92-1.52]ns, p=0.20
Covariates
Early regular alcohol use	5.35 [4.23-6.77]	1.68 [1.32-2.12]
Early regular tobacco smoking	9.21 [7.33-11.59]	2.25 [1.82-2.79]
Early sexual debut	4.06 [3.38-4.87]	2.44 [2.03-2.93]
Early onset of menstruation	1.40 [1.14-1.71]	1.12 [0.91-1.37]ns, p=0.29
Conduct Disorder symptoms	3.12 [2.63-3.71]	1.79 [1.51-2.12]
Childhood sexual abuse	2.13 [1.70-2.65]	1.74 [1.39-2.17]

^nsnot significant at p < 0.05.