TABLE 5.

Odds ratios from logistic and multinomial logistic regression analyses of the association between length of relationship and the likelihood that teenagers ever and always used contraceptives in their first sexual relationship, by gender, according to sample

	All		Romantic/liked
Measure	Ever	Always‡	Ever	Always‡
Gender × length of relationship	0.86*	0.90†	0.85*	0.89†
Length of relationship
Males	0.99	0.80***	0.98	0.80***
Females	1.16**	0.89**	1.14*	0.90*
F	3.48***	3.02***	3.70***	2.25***
df	18	36	21	42

^*p<.05.

^**p<.001.

^***p<.001

^†p<.10.

^‡Versus sometimes.

Note. The model includes all other covariates shown in Table 3.