Table 1.

Prevalence (%), Prevalence ratio (PR) and 95% confidence interval (95%CI) of sedentary behavior according to sociodemographic, economic, lifestyle and body mass index (BMI) variables of adolescents aged from 10 to 17, 2009 to 2011.

Variables		n	Sedentary behavior (≥ 4 hours/day)
			%	PR	95%CI
Sex
	Male	870	56.8	1
	Female	846	59.5	1.04	0.96;1.13
Agea
	10	105	40.0	1
	11	603	52.6	1.31	1.02;1.68
	12	443	59.8	1.49	1.17;1.91
	13	236	63.6	1.59	1.23;2.04
	≥ 14	329	67.8	1.69	1.32;2.16
Skin color
	White	371	56.6	1
	Black	259	57.9	1.02	0.89;1.17
	Mixed race	1,005	59.0	1.04	0.94;1.15
	Other	81	54.3	0.96	0.77;1.19
Economic classa,b
	A	86	68.6	2.33	1.57;3.46
	B	603	62.5	2.12	1.46;3.08
	C	959	56.4	1.92	1.32;2.78
	D and E	68	29.4	1
Type of school
	Public	1,357	56.1	1
	Private	358	65.9	1.17	1.07;1.28
Maternal schooling (years)a,c
	0 to 4	103	43.7	1
	5 to 8	460	56.3	1.29	1.02;1.62
	9 to 11	841	59.2	1.35	1.08;1.70
	≥ 12	259	63.7	1.46	1.15;1.85
Paternal schooling (years)d
	0 to 4	128	57.8	1
	5 to 8	490	60.2	1.04	0.88;1.22
	9 to 11	665	57.4	0.99	0.84;1.17
	≥ 12	226	61.5	1.06	0.88;1.27
Place of residence
	State Capital	1,641	58.7	1
	Interior	75	45.3	0.77	0.60;0.99
Physical activity
	< 300 min/week	852	61.9	1.13	1.05;1.23
	≥ 300 min/week	864	54.4	1
Eating pattern
	Unsatisfactory	586	61.6	1.09	1.01;1.19
	Satisfactory	1,130	56.3	1
Tried alcohol
	Yes	668	63.3	1.15	1.07;1.25
	No	1,048	54.8	1
Tried smoking
	Yes	65	69.2	1.20	1.01;1.42
	No	1,651	57.7	1
Childhood BMI/Age classification
	Low BMI	41	68.3	1.18	0.95;1.46
	Appropriate BMI	1,325	57.8	1
	Overweight	270	54.8	0.94	0.84;1.06
	Obese	80	68.8	1.19	1.02;1.39
Adolescence BMI/Age classification
	Low BMI	56	48.2	0.85	0.64;1.12
	Appropriate BMI	1,185	56.8	1
	Overweight	315	65.1	1.14	1.04;1.26
	Obese	160	57.5	1.01	0.88;1.16

^ap of linear trend < 0.01.

^bClassification according to Brazilian Association of Research Companies (ABEP, 2008).

^cData for 53 individuals missing.

^dData for 207 individuals missing.