Table 2. Relative risks from log binomial regression analysis showing association between pregnancy intentions, maternal depression and social support with Low Birth Weight, Southwest Ethiopia, 2013.

Variables	Model IRR, (95% CI)	Model IIRR, (95% CI)	Model IIIRR, (95% CI)	Model IVRR, (95% CI)
Pregnancy intention
Intended (reference)	1.00	1.00
Mistimed	1.24(0.72–2.12)	1.25(0.73–2.14)
Unwanted	2.12(1.05–4.28)*	2.08(1.02–4.23)*
Depression in pregnancy			1.87(1.09–3.21)*	1.77(1.03–3.04)*
High Social support		0.59(0.37–0.94)*		0.59(0.36–0.94)*
Maternal age
15–19	1.00	1.00	1.00	1.00
20–29	0.59(0.22–1.63)	0.57(0.21–1.59)	0.56(0.23–1.37)	0.53(0.21–1.31)
30–34	0.65(0.20–2.13)	0.62(0.18–2.03)	0.59(0.22–1.65)	0.56(0.20–1.56)
35+	0.86(0.22–3.28)	0.71(0.18–2.80)	0.88(0.28–2.81)	0.75(0.23–2.41)
Mother’s education
No education	1.00	1.00	1.00	1.00
Primary	0.82 (0.45–1.49)	0.76(0.41–1.41)	0.90(0.49–1.67)	0.86(0.47–1.59)
Secondary & above	0.48(0.10–2.21)	0.45(0.10–2.16)	0.51(0.11–2.42)	0.50(0.11–2.40)
Urban Residence	0.49(0.22–1.13)	0.46(0.20–1.05)	0.45(0.20–1.04)	0.43(0.19–0.98)
Wealth tertile
Lower (reference)	1.00	1.00	1.00	1.00
Middle	0.52 (0.31–0.89)*	0.54(0.31–0.96)*	0.54(0.31–0.96)*	0.57(0.31–1.01)
Upper	0.44(0.26–0.76)*	0.50(0.27–0.90)*	0.53(0.30–0.93)*	0.55(0.31–0.97)*
No ANC received	2.02(1.29–3.17)*	1.73(1.08–2.78)*	1.65(1.03–2.64)*	1.66(1.04–2.67)*
Has history of still births	0.68(0.34–1.35)	0.72(0.34–1.53)	0.69 (0.32–1.46)	0.72(0.34–1.54)
Maternal MUAC
<230 cm (Reference)	1.00	1.00	1.00	1.00
>230 cm	0.48(0.29–0.78)*	0.59(0.37–0.94)*	0.56(0.33–0.93)*	0.56(0.36–0.94)*

*p<0.05;

**p<0.01;

***P<0.001.