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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