Table 3.

Results from Logistic Regressions Examining the Relationship Between Sexual Orientation and Pregnancy Risk Behaviors

	Model 1		Model 2
	OR	95% CI	OR	95% CI
	Panel A: Condom use at last sex
Sexual identity
Heterosexual (reference)
Lesbian	0.37	0.22–0.64	0.36	0.21–0.63
Bisexual	0.91	0.74–1.13	0.92	0.72–1.17
Not sure	0.5	0.30–0.82	0.46	0.27–0.80
Sexual behavior
Only male (reference)
Both male and female	0.72	0.59–0.88	0.71	0.57–0.89

Panel B: Alcohol or other drug use at last sex
Sexual identity
Heterosexual (reference)
Lesbian	1.46	0.82–2.58	1.49	0.83–2.68
Bisexual	1.36	0.98–1.88	1.39	0.99–1.96
Not sure	2.05	1.01–4.14	2.07	1.05–4.10
Sexual behavior
Only male (reference)
Both male and female	1.52	1.13–2.05	1.45	1.08–1.93

Panel C: WHO Tier 1 or Tier 2 contraception use at last sex
Sexual identity
Heterosexual (reference)
Lesbian	0.75	0.27–2.09	0.75	0.27–2.11
Bisexual	0.81	0.61–1.08	0.93	0.67–1.31
Not sure	0.44	0.26–0.76	0.55	0.34–0.90
Sexual behavior
Only male (reference)
Both male and female	1.07	0.88–1.30	0.96	0.76–1.20

Model 2 adjusts for age, race/ethnicity, and school grade.

Bolded values = p < 0.05.

Italicized values = p < 0.10.

CI, confidence interval; OR, odds ratio.