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Table 2 Bivariate correlations between moderate-to-vigorous physical activity and independent variables, by gender

From: The relative influence of demographic, individual, social, and environmental factors on physical activity among boys and girls

  Boys
(n = 149)
Girls
(n = 145)
Total
(n = 294)
  r  
Demographic variables    
   Age, years -0.23* -0.05 -0.13*
   Race/ethnicity 0.06 -0.08 0.001
   Parent education 0.02 0.03 0.04
   Free or reduced price lunch 0.08 0.11 0.10
   BMI z-score -0.05 0.02 -0.02
   Physical maturation -0.20* -0.05 -0.22**
Individual variables    
   Self-efficacy 0.29** 0.06 0.20**
   Enjoyment 0.13 0.12 0.14*
   Barriers -0.02 -0.20* -0.15*
Social variables    
   Parent support 0.22* 0.09 0.15*
   Peer support 0.26* 0.13 0.21**
   Parent physical activity 0.01 0.03 0.003
Environmental variables    
   Home PA equipment1 0.26* 0.04 0.21**
   Temperature 0.27** 0.08 0.18*
   Precipitation 0.11 0.09 0.10
   Snow 0.04 0.07 0.06
   Neighborhood safety -0.06 0.04 -0.05
   Walking infrastructure -0.01 0.14 0.05
   Distance to park2 -0.12 -0.10 -0.11
   Distance to rec center2 0.02 -0.21* -0.03
   Distance to trail2 -0.06 -0.09 -0.04
   Distance to school attended2 0.05 -0.28** -0.12*
   Walkability index3 -0.03 0.28** 0.09
  1. *P < 0.05, **P < 0.001
  2. BMI = body mass index
  3. 1Physical activity equipment availability and accessibility summary score
  4. 2Distance in kilometers
  5. 3Sum of z-scores of residential, intersection, and employment density variables
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