Table 3.

Multivariate multinomial logistic regression of factors associated with mistimed and unwanted pregnancies among women in three districts of Tanzania, 2011 (n = 2,054)

	Mistimed pregnancy		Unwanted pregnancy
Variable	RRR	95%Confidence Interval (CI)	RRR	95%Confidence Interval (CI)
Age (years)
<20 (ref)	1.00	–	1.00	–
20–34	0.53**	0.35–0.83	0.63	0.34–1.17
>34	0.35***	0.22–0.57	0.60	0.31–1.18
Marital status
Married (ref)	1.00	–	1.00	–
Ever married	0.93	0.66–1.32	1.14	0.72–1.81
Single	2.24***	1.58–3.17	4.63***	2.99–7.15
Gravidity
1 (ref)	1.00	–	1.00	–
2–4	1.18	0.85–1.64	0.98	0.62–1.57
>4	1.76**	1.19–2.61	2.65***	1.54–4.54
Religion
Christian (ref)	1.00	–	1.00	–
Muslim	0.85	0.68–1.06	0.71**	0.52–0.97
Traditional/other	0.44**	0.20–0.97	0.51	0.14–1.84
District
Kilombero (ref)	1.00	–	1.00	–
Rufiji	0.96	0.70–1.31	0.78	0.51–1.20
Ulanga	1.15	0.85–1.55	0.42**	0.24–0.72
Contraceptive use
Not using (ref)	1.00	–	1.00	–
Ever used	1.11	0.87–1.42	0.81	0.58–1.15
Currently using	0.93	0.70–1.22	1.00	0.70–1.41
Inter–partner discussion about family planning
Yes (ref)	1.00	–	1.00	–
No	1.49***	1.20–1.84	1.48**	1.10–1.99
Education
Never been to school (ref)	1.00	–	1.00	–
Primary	1.14	0.87–1.49	0.83	0.58–1.18
Secondary/higher	1.24	0.76–2.03	0.70	0.35–1.42
Socio-economic status
Poor (ref)	1.00	–	1.00	–
Middle	0.88	0.68–1.14	0.92	0.64–1.32
Rich	0.85	0.64–1.13	1.02	0.69–1.49
Type of residence
Rural (ref)	1.00	–	1.00	–
Urban	1.09	0.83–1.45	0.77	0.54–1.09

***P < 0.001, **P < 0.05, RRR = Relative risk ratio; CI = Confidence interval; (ref) = Reference category.