Table 3: Crude and adjusted analyses on association between use of public places for physical activity and their distances from homes and body mass index, according to family income strata, among 7 to 14-year-old schoolchildren living in Florianópolis, Santa Catarina, Brazil, 2012-2013.
| Environmental variables | Low income | Medium income | High income | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Crude analysesa | Adjusted analyses*,a,b | Crude analysesa | Adjusted analyses*,a,b | Crude analysesa | Adjusted analyses*,a,b | |||||||
| β | 95% CI | β | 95% CI | β | 95% CI | β | 95% CI | β | 95% CI | β | 95% CI | |
| Uses beaches | ||||||||||||
| No | 0.00 | - | - | 0.00 | 0.00 | 0.00 | 0.00 | |||||
| Yes | -0.01 | -0.71; 0.69 | - | - | 0.25 | -0.44; 0.95 | 0.21 | -1.11; 1.53 | -0.33 | -0.55; -0.09 | -0.10 | -1.69; 1.49 |
| Uses parks/ playgrounds | ||||||||||||
| No | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | - | - | |||||
| Yes | -0.39 | -1.12; 0.32 | 0.61 | -0.79; 2.00 | -0.45 | -1.67; 0.77 | -0.45 | -2.01; 1.10 | -0.56 | -2.52; 1.40 | - | - |
| Uses sports courts | ||||||||||||
| No | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||||||
| Yes | 0.58 | -0.23; 1.40 | 0.79 | -1.41; 2.99 | 0.008 | -0.94; 0.96 | -0.44 | -2.32; 1.43 | 0.88 | -0.58; 2.34 | 0.08 | -3.23; 3.39 |
| Uses football pitches | ||||||||||||
| No | 0.00 | - | - | 0.00 | 0.00 | 0.00 | - | |||||
| Yes | 0.59 | -0.48; 1.67 | - | - | -0.08 | -1.39; 1.22 | -0.15 | -1.95; 1.65 | 1.12 | -0.34; 2.57 | - | - |
| Distance to beaches (minutes) | ||||||||||||
| 1-10 | 1.08 | -0.49; 2.67 | 0.94 | -1.92; 3.80 | -0.25 | -0.59; 0.08 | -0.65 | -1.60; 0.31 | 0.13 | -0.11; 0.38 | - | - |
| 11-19 | -0.02 | -1.31; 1.26 | -1.10 | -1.61; -0.59 | -0.58 | -2.05; 0.89 | -0.81 | -2.36; 0.75 | -0.14 | -1.50; 1.22 | - | - |
| ≥ 20 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | - | - | |||||
| Distance to parks/playgrounds (minutes) | ||||||||||||
| 1-10 | -0.77 | -1.92; 0.38 | -2.15 | -2.53; -1.77 | -0.46 | -1.65; 0.73 | - | - | 0.78 | 0.44; 1.12 | 1.11 | -0.12; 2.34 |
| 11-19 | -1.52 | -3.29; 0.24 | -1.96 | -3.45; -0.47 | 0.10 | -1.36; 1.56 | - | - | 0.86 | -1.00; 2.72 | 0.07 | -1.20; 1.35 |
| ≥ 20 | 0.00 | 0.00 | - | 0.00 | - | - | 0.00 | 0.00 | ||||
| Distance to sports courts (minutes) | ||||||||||||
| 1-10 | 0.93 | -0.85; 2.71 | - | - | 0.06 | -1.11; 1.23 | 0.41 | -0.40; 1.23 | 0.10 | -2.05; 2.27 | - | - |
| 11-19 | 0.34 | -2.00; 2.69 | - | - | 0.02 | -1.42; 1.46 | 0.13 | -1.31; 1.55 | -0.11 | -3.43; 3.21 | - | - |
| ≥ 20 | 0.00 | - | - | 0.00 | 0.00 | 0.00 | - | - | ||||
| Distance to football pitches (minutes) | ||||||||||||
| 1-10 | 1.30 | 0.01; 2.59 | 1.73 | 0.31; 3.15 | -0.09 | -1.53; 1.33 | - | - | 0.81 | 0.38; 1.23 | -0.15 | -0.68; 0.37 |
| 11-19 | 0.53 | 0.18; 0.88 | 1.67 | 0.72; 2.62 | 0.19 | -0.98; 1.35 | - | - | 0.67 | -1.02; 2.37 | -0.01 | -1.35; 1.32 |
| ≥ 20 | 0.00 | 0.00 | 0.00 | - | - | 0.00 | 0.00 | |||||
*Multivariate models were controlled for the continuous variable of schoolchildren’s age; aP-value significant at 5%; bVariables of use of and distance from football pitches presented collinearity.