Table 1. Sample size, estimate of the population of adolescent students, prevalence and prevalence ratios of leisure-time physical inactivity and no physical activity according to macro-region and sociodemographic characteristics. ERICA, Brazil, 2013-2014.
| Variable | Sample (n)a | Population (N)b | Physical inactivity (< 300 min/week) | No physical activity (0 min/week) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
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|
|
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| % | 95%CI | PRadjusted c | 95%CI | % | 95%CI | PRadjusted c | 95%CI | |||
| Brazil | 74,589 | 10,147,700 | 54.3 | 53.4-55.2 | - | - | 26.5 | 25.8-27.3 | - | - |
| Macro-region | ||||||||||
| North | 15,073 | 855,362 | 49.8 | 48.7-50.9 | 1.00 | - | 27.2 | 26.1-28.3 | 1.00 | - |
| Northeast | 23,167 | 2,165,033 | 55.7 | 53.2-58.1 | 1.14 | 1.07-1.21 | 29.5 | 27.8-31.4 | 1.13 | 1.04-1.23 |
| Southeast | 17,080 | 5,153,506 | 54.8 | 53.5-56.1 | 1.17 | 1.12-1.22 | 26.5 | 25.3-27.7 | 1.04 | 0.96-1.12 |
| South | 9,542 | 1,195,789 | 55.8 | 53.5-58.1 | 1.16 | 1.09-1.23 | 22.9 | 20.9-25.1 | 0.88 | 0.76-1.01 |
| Midwest | 9,727 | 778,010 | 50.1 | 47.8-52.4 | 1.04 | 0.98-1.10 | 23.6 | 22.0-25.2 | 0.92 | 0.83-1.00 |
| Sex | ||||||||||
| Female | 41,225 | 5,052,137 | 70.7 | 69.5-71.9 | 1.00 | - | 39.8 | 38.8-40.9 | 1.00 | - |
| Male | 33,364 | 5,095,563 | 38.0 | 36.7-39.4 | 0.53 | 0.51-0.56 | 13.4 | 12.4-14.4 | 0.32 | 0.29-0.36 |
| Age (years) | ||||||||||
| 12-13 | 20,571 | 3,562,176 | 52.0 | 50.6-53.4 | 1.00 | - | 21.0 | 19.8-22.2 | 1.00 | - |
| 14-15 | 27,889 | 3,550,879 | 54.2 | 52.9-55.6 | 1.06 | 1.02-1.11 | 26.6 | 25.3-27.8 | 1.35 | 1.24-1.46 |
| 16-17 | 26,129 | 3,034,645 | 57.1 | 55.5-58.6 | 1.11 | 1.06-1.16 | 33.1 | 31.7-34.4 | 1.66 | 1.54-1.80 |
| Skin color | ||||||||||
| White | 26,477 | 4,099,110 | 55.4 | 54.1-56.6 | 1.00 | - | 26.3 | 25.1-27.6 | 1.00 | - |
| Black | 5,654 | 821,258 | 47.9 | 44.5-51.3 | 0.87 | 0.80-0.95 | 25.8 | 22.8-29.0 | 0.94 | 0.80-1.11 |
| Brown | 37,984 | 4,943,938 | 54.6 | 53.5-55.7 | 0.96 | 0.93-0.99 | 26.6 | 25.5-27.7 | 0.88 | 0.82-0.95 |
| Yellow | 1,881 | 215,840 | 54.0 | 49.1-58.8 | 0.99 | 0.90-1.09 | 26.4 | 22.9-30.3 | 0.96 | 0.83-1.11 |
| Indigenous | 561 | 67,554 | 39.4 | 29.8-50.0 | 0.68 | 0.56-0.82 | 15.1 | 11.0-20.2 | 0.63 | 0.44-0.90 |
| Economic class | ||||||||||
| A (high) | 6,336 | 1,100,099 | 42.2 | 38.5-46.1 | 1.00 | - | 15.9 | 13.4-18.7 | 1.00 | - |
| B | 25,258 | 5,495,819 | 51.4 | 50.0-52.8 | 1.14 | 1.04-1.25 | 23.4 | 22.3-24.5 | 1.30 | 1.09-1.54 |
| C | 17,339 | 3,389,885 | 58.5 | 57.0-60.1 | 1.24 | 1.13-1.36 | 30.2 | 28.9-32.5 | 1.49 | 1.25-1.78 |
| D-E (low) | 936 | 161,898 | 64.6 | 58.0-70.6 | 1.33 | 1.17-1.51 | 32.7 | 26.8-39.2 | 1.49 | 1.15-1.93 |
ERICA: Study of Cardiovascular Risks in Adolescents; PR: prevalence ratio
a Non-weighted values.
b Population of adolescents, according to the Brazilian Institute of Geography and Statistics.
c Adjusted model for macro-region, sex, age and economic class.