Table 2.

Estimated prevalence of leisure-time sedentary lifestyle according to independent variables. Pelotas, Southern Brazil, 1982 to 2004-5

Variable	n	%	Men		Women
			n	%	n	%
Skin color*	0.18**		0.02**		0.23**
White	3238	65.0	1655	50.7	1583	80.0
Black or Mixed	898	62.6	469	44.4	429	82.5
Family income in 1982 (MW)	< 0.001***		0.02***		<0.001***
≤1	852	67.1	436	49.1	416	86.1
1.1-3	2126	67.1	1095	51.7	1031	83.5
3.1-6	800	61.2	418	47.6	382	76.2
6.1-10	252	53.6	130	40.0	122	68.0
>10	244	51.2	123	41.5	121	61.2
Income change (1982 → 2004-5)	< 0.001**		< 0.001**		< 0.001**
Always poor	708	71.3	334	51.8	374	88.8
Non-poor → poor	714	74.0	341	60.4	373	86.3
Poor → non-poor	665	61.8	360	46.4	305	80.0
Never poor	2209	59.9	1177	46.1	1032	75.7
Birth weight (grams)****	< 0.001***		0.81***		0.01***
<2500	301	67.8	136	46.3	165	85.5
2500-2999	1021	69.1	451	52.3	570	82.3
3000-3499	1634	63.0	849	46.4	785	80.9
3500-3999	1098	62.8	611	51.2	487	77.0
≥4000	241	57.3	165	48.5	76	76.3
Total *****	4296	64.4	2212	49.2	2084	80.6

MW: Minimum wage

^*150 subjects self-referred as Asian or native

^**Chi-square test for heterogeneity

^***Chi-square test for linear trend

^****Information was missing in 23 (0.5%) out of 4,297 subjects in 2004-5

^*****Information on leisure-time sedentary lifestyle was missing information in one subject in 2004-5