Table 4.

Crude and adjusted analyses of the association between independent variables and leisure-time sedentary lifestyle among women. Pelotas, Southern Brazil, 1982 to 2004-2005

Variable	Crude analysis			Adjusted analysis^*
Variable	PR	95% CI	p-value	PR	95% CI	p-value
Skin color			0.23^**			0.64^**
White	1	-		1	-
Black or Mixed	1.03	0.98;1.08		0.99	0.94;1.04
Family income in 1982 (MW)			<0.001^***		<0.001^***
<1.0	1.41	1.22;1.63		1.41	1.22;1.64
1.1-3.0	1.37	1.18;1.58		1.37	1.19;1.58
3.1-6.0	1.25	1.07;1.45		1.25	1.07;1.45
6.1-10.0	1.11	0.92; 1.34		1.11	0.92; 1.34
>10.0	1	-		1	-
Income change (1982 → 2004-5)			<0.001^**			<0.001^**
Always poor	1.17	1.12;1.23		1.18	1.12;1.24
Not poor → poor	1.14	1.08;1.20		1.14	1.08;1.20
Poor → not poor	1.06	0.99;1.13		1.06	0.99;1.13
Never poor	1	-		1	-
Birth weight (grams)			0.01^***			0.04^***
<2500	1.12	0.97;1.29		1.09	0.95;1.26
2500-2999	1.08	0.95;1.25		1.06	0.93;1.20
3000-3499	1.06	0.93;1.21		1.06	0.93;1.20
3500-3999	1.01	0.88;1.15		1.01	0.89;1.16
≥4000	1	-		1	-

MW: Monthly minimum wages

Variables at the first level (skin color and family income in 1982) were adjusted for and included in the analysis if p<0.2. Income change was adjusted for skin color. Birth weight was adjusted for skin color and family income in 1982

^**

Wald test for heterogeneity

^***

Wald test for linear trend