Table 3.

Childhood correlates and sexuality groups, adjusted for age and sex^a (N = 12,885)

Correlate	Level	N	Population prevalence of correlate level %b (SE)	Sexuality groups
				Heterosexual			Bisexual OR (95% CI)	Homosexual OR (95% CI)
				No same-sex behavior %c (SE)	Same-sex sexual experience only OR (95% CI)	Same-sex sexual experience and relationship OR (95% CI)
Highest parental education	Primary	2541	14.4 (0.4)	96.2 (0.6)	1.0	1.0	1.0	1.0
	Secondary	6517	52.4 (0.6)	94.5 (0.4)	1.5 (0.9, 2.4)	1.5 (0.8,2.9)	1.1 (0.6,2.0)	2.0 (0.8,4.8)
	Tertiary	3434	33.2 (0.7)	94.2 (0.5)	1.8 (1.0,3.0)	1.4 (0.7,3.0)	0.8 (0.4, 1.7)	1.9 (0.8,4.7)
	Overall testd				F = 1.2, df = 8, p = .30
Family of origin up to age 16	2 biological parents	10521	85.2 (0.4)	95.0 (0.3)	1.0	1.0	1.0	1.0
	1 biological + step-parent	744	5.5 (0.3)	92.4 (0.1)	2.0 (1.3,3.1)	1.0 (0.4,2.2)	2.0 (0.8,5.1)	0.5 (0.1,2.1)
	2 other parent figures (Male + Female)	1014	5.4 (0.2)	92.3 (0.7)	1.2 (0.7,1.8)	1.7 (0.9,3.3)	2.3 (0.9, 5.8)	2.6 (1.4,4.8)
	Single parent or other	606	3.9 (0.2)	94.0 (1.0)	1.5 (0.9, 2.6)	0.5 (0.1,1.4)	1.6 (0.5, 5.2)	0.9 (0.3, 2.7)
	Overall testd				F = 2.7, df = 12, p = .001

^aModelled using multinomial logistic regression with sexuality group as the outcome and heterosexuals with no same-sex sexual experience as the reference group, using a single correlate, 4 age groups (16-29/30–44/45-59/60+), sex and an age by sex interaction

^bPercentage at each correlate level (N = 12,885 except for parental education for which N = 12,492)

^cPercentage is the percentage in the reference category (heterosexual, no same-sex sexual experience) for each level of the childhood correlate, produced as a predicted marginal from the model

^dOverall test provides the significance of the covariate in the model with age, sex, and age by sex