Table 3.

Multivariable logistic regression of the odds of pregnancy within 12 months

		N	Relationship with pregnancy between baseline and 12 months
			Unadjusted estimates				Adjusted estimates
			OR	95%CI		p value	OR	95%CI		p value
DAP score	0–4	884	0.22	0.17	0.28		0.22	0.17	0.29	< 0.001
Age group	15–19	139	Reference			< 0.001	Reference			0.025
	20–24	143	2.56	0.68	9.72		0.69	0.15	3.12
	25–29	139	10.82	3.20	36.57		1.78	0.46	6.88
	30–34	224	12.87	3.92	42.23		0.90	0.22	3.66
	35–39	209	5.64	1.67	19.07		0.49	0.11	2.12
	40 +	101	3.62	0.93	14.10		0.47	0.09	2.47
Number of children	0	430	Reference			< 0.001	Reference			0.004
	1	208	5.07	3.22	7.97		3.30	1.74	6.26
	2	233	1.24	0.72	2.15		2.56	1.16	5.65
	3 +	78	0.88	0.36	2.17		2.40	0.78	7.41
Relationship status	Not in a relationship	152	Reference			< 0.001	Not retained in final model
	In a relationship	338	3.39	1.17	9.84
	Married	479	9.55	3.44	26.47
Ethnicity	White	834	Reference			0.31
	Black, Asian, Mixed and Other ethnicities	128	0.74	0.41	1.34
Highest education level	School	265	Reference			< 0.001
	Undergraduate	389	4.61	2.44	8.71
	Postgraduate	309	3.79	1.97	7.31

OR odds ratio, 95%CI 95% confidence interval