Table 4.

Prevalence of overweight (≥ 25 kg/m²) according to demographic and socioeconomic variables, birthweight, and breastfeeding. Pelotas, Southern Brazil, 1982 to 2004-5

Variable	Total		Men		Women
Variable	n	%	n	%	n	%
Skin color		p = 0.002^*		p = 0.97^*		p <0.001^*
White	3170	27.1	1653	30.5	1517	23.4
Black or Mixed	882	32.7	469	30.5	413	35.1
Family income -1982 (MW)		p = 0.14^*		p <0.001^**		p = 0.001^**
≤1	826	25.5	438	22.1	388	29.4
1.1 - 3	2079	29.1	1092	31.0	987	27.1
3.1 - 6	788	30.8	415	35.4	373	25.7
6.1 - 10	244	28.3	128	32.8	116	23.3
>10	240	25.8	123	39.8	117	11.1
Change in income (1982 → 2004-5)		p = 0.95^**		p <0.001^**		p <0.001^**
Always poor	682	28.3	334	20.4	348	35.9
Non poor → poor	697	28.4	340	30.6	357	26.3
Poor → non poor	649	28.7	360	28.8	289	28.0
Never poor	2170	28.4	1172	34.0	998	21.8
Birthweight (grams)		p <0.001^**		p <0.001^**		p = 0.03^**
<2500	295	24.7	135	26.7	160	23.1
2500 - 2999	994	26.0	450	25.1	544	26.7
3000 - 3499	1588	26.1	846	29.1	742	22.6
3500 - 3999	1081	33.0	610	35.2	471	30.1
≥4000	239	38.5	165	39.4	74	36.5
Breastfeeding (months)		p = 0.22^**		p = 0.99^**		p = 0.03^**
<1.0	885	27.8	482	31.7	403	23.1
1.0 - 2.9	1049	27.3	542	30.3	507	24.1
3.0 - 5.9	934	28.4	484	28.7	450	28.0
6.0 - 8.9	380	28.4	201	32.8	179	23.5
9.0 - 11.9	157	33.1	83	32.5	74	33.8
≥12.0	661	29.5	335	30.7	326	28.2
Youth’s schooling (years)		p = 0.04^*		p = 0.004^**		p <0.001^**
0 - 4	337	26.7	206	21.8	131	34.4
5 - 8	1172	30.1	716	29.6	456	30.9
9 - 11	2028	29.1	1010	32.3	1018	26.0
≥12	661	24.2	274	33.6	387	17.6

Total	4198	28.9	2206	30.6	1992^***	26.1

MW: Minimum wages

Chi-square test for heterogeneity

^**

Chi-square test for linear trend

^***

Excluding 90 women with 3 or more months of pregnancy