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Table 3 Odds ratios (OR) and 95% confidence intervals (CI) for engaging in walking and cycling during leisure time at least 30 minutes a day

From: Objective and perceived availability of physical activity opportunities: differences in associations with physical activity behavior among urban adolescents

  Model 1: Demographics Model 2: Perceived environment
(N = 654)
Model 3: Objective environment
(N = 654)
  OR [95% CI] OR [95% CI] OR [95% CI]
Gender (referent = male) 0.53 [0.35-0.80] 0.51 [0.34-0.76] 0.53 [0.36-0.80]
Age 1.01 [0.86-1.19] 1.01 [0.85-1.20] 1.02 [0.87-1.21]
Ethnicity (referent = Western) 1.98 [1.32-2.97] 2.03 [1.36-3.04] 1.75 [1.13-2.72]
Educational level (referent = high) 1.32 [0.89-1.97] 1.35 [0.91-2.01] 1.30 [0.88-1.95]
Environment    
Parksa, b   1.66 [1.07-2.57] 0.97 [0.74-1.27]
Bicycle lanesa, c   1.16 [0.76-1.77] 1.01 [0.64-1.60]
Sidewalksa, c   1.58 [0.73-3.40] 1.03 [0.99-1.07]
  1. a For perceived environment, reference is "not available;" b for objective environment, the number counted within a radius of 1500 meters; c for objective environment, the percentage of neighborhood land area. Models 2 and 3 are independent of each other. Bold values are significant.