Table 2.

Crude and adjusted analysis of the association between antenatal depressibe symptoms (EPDS≥13) and socioeconomic, demographic and health-related characteristics. Pelotas, Brazil, 2015.

Variables	Crude PR (95% CI)	Pb	Adjusted PR (95% CI)a	Pb
Level 1
Mother´s age (years)		0.01		0.037
<20	1		1
20–34	0.76 (0·63–0·91)		1.21 (1.01–1.45)
≥35	0.78 (0·61–1·00)		1.36 (1.06–1.73)
Schooling (years)		<0.001		<0.001
0–4	5·67 (4·42–7·28)		5·47 (4·22–7·09)
5–8	4·24 (3·36–5·34)		4·25 (3·34–5·42)
9–11	2·28 (1·79–2·90)		2·27 (1·78–2·90)
≥12	1		1
Skin color		<0.001		0.001
White	1		1
Non-white	1·70 (1·48–1·95)		1·28 (1·11–1·47)
Level 2
Living with partner		<0.001		<0.001
Yes	1		1
No	1·66 (1·42–1·95)		1·36 (1·15–1·61)
Planned pregnancy		<0.001		0.001
Yes	1		1
No	1·78 (1·53–2·07)		1·33 (1·13–1·57)
Number of children at home		<0.001		<0.001
0	1		1
1	1·61 (1.36–1.89)		1·55 (1·28–1·88)
2 or more	2·56 (2.15–3.00)		1·72 (1·38–2·15)
History of depression		<0.001		<0.001
Yes	2.93 (2.56–3.35)		2.81 (2.44–3.25)
No	1		1
Pre-pregnancy BMI		0.044		0.444
<18.5	1		1
18.5–24.9	0.79 (0.53–1.19)		0.90 (0·63–1·29)
25.0–29.9	0.80 (0.53–1.21)		0.87 (0·60–1·27)
≥ 30	1·02 (0·67–1·55)		1·00 (0·69–1·46)
Level 3
Smoking during pregnancy		<0.001		0.012
Yes	2·17 (1·88–2·51)		1·22 (1·05–1·43)
No	1		1
Alcohol during pregnancy		<0.001		0.002
Yes	1·60 (1·35–1·90)		1·30 (1·10–1·55)
No	1		1
Work outside home		<0.001		0.540
Yes	1		1
No	1·81 (1·56–2·10)		0.95 (0·82–1·11)
Hypertension		<0.001		0.123
Yes	1·57 (1·31–1·88)		1·15 (0·96–1·38)
No	1		1
Diabetes		0.002		0.184
Yes	1·53 (1·16–2·00)		1·19 (0·92–1·55)
No	1		1
Leisure-time physical activity		<0.001		0.170
Yes	1		1
No	1·78 (0·44–0·78)		1·18 (0·93–1·49)

^aPRs shown for the adjusted analysis are adjusted for variables presenting a P value <0.20 in the same or in the upper levels of the conceptual model.

^bWald test for heterogeneity.