TABLE 3.

Hazard ratios (and standard errors) from mixed-effects hazard models assessing the likelihood of a pregnancy being reported as mistimed or unwanted

Characteristic	Mistimed			Unwanted
	Model 1	Model 2	Model 3	Model 1	Model 2	Model 3
Sexual orientation
Heterosexual women with male partners only (ref)	1.00	1.00	1.00	1.00	1.00	1.00
Heterosexual women who have sex with women	2.24 (0.15)***	1.64 (0.15)***	1.68 (0.15)***	1.81 (0.19)**	1.35 (0.20)	1.30 (0.20)
Bisexual	2.06 (0.25)**	1.22 (0.24)	1.27 (0.24)	2.81 (0.26)***	1.75 (0.26)*	1.65 (0.26)*
Lesbian	1.36 (0.88)***	1.04 (0.78)	1.00 (0.78)	6.67 (0.64)**	4.64 (0.61)*	4.36 (0.61)*
Parity	na	2.07 (0.03)***	2.09 (0.03)***	na	2.39 (0.04)***	2.36 (0.04)***
Maternal age
20–24	na	9.51 (0.15)***	9.68 (0.15)***	na	7.40 (0.18)***	7.33 (0.18)***
25–29	na	2.26 (0.14)***	2.28 (0.14)***	na	2.15 (0.16)***	2.13 (0.16)***
30–34 (ref)	na	1.00	1.00	na	1.00	1.00
35–39	na	0.80 (0.19)	0.80 (0.19)	na	0.93 (0.19)	0.93 (0.19)
40–45	na	0.30 (0.49)*	0.30 (0.49)*	na	0.83 (0.33)	0.83 (0.32)
Race/ethnicity
White (ref)	na	1.00	1.00	na	1.00	1.00
Black	na	1.21 (0.12)	1.22 (0.12)	na	1.92 (0.15)***	1.92 (0.15)***
Hispanic	na	1.11 (0.13)	1.10 (0.13)	na	1.31 (0.16)†	1.34 (0.16)
Other	na	1.36 (0.20)	1.35 (0.20)	na	1.97 (0.24)**	2.00 (0.24)**
Education
College graduate (ref)	na	1.00	1.00	na	1.00	1.00
High school graduate	na	1.24 (0.13)†	1.26 (0.13)†	na	2.38 (0.17)***	2.38 (0.17)***
Some college	na	1.31 (0.13)*	1.32 (0.13)*	na	2.31 (0.18)***	2.32 (0.18)***
Forced sex‡	na	na	0.98 (0.13)	na	na	1.19 (0.15)
Early sexual debut§	na	na	0.83 (0.13)	na	na	0.99 (0.14)
Random effect SD	1.29	1.14	1.14	1.51	1.41	1.40

^*p<.05.

^**p<.01.

^***p<.001.

^†p<.10.

^‡Experienced forced sex before pregnancy.

^§First intercourse at age 14 or younger.

Notes: ref=reference group. na=not applicable. SD=standard deviation.