Table 2

Linear regression of time outdoors after school and physical activity (counts per hour).

Beta (95% CI)

t

p

R2


Model 1

3.30 pm-4.30 pm

900.1 (703.1,1097.2)

9.48

<.001

0.144

4.30 pm-5.30 pm

1117.1 (894.3,1339.9)

10.4

<.001

0.141

5.30 pm-6.30 pm

993.4 (789.8,1197.0)

10.12

<.001

0.110

6.30 pm-7.30 pm

915.3 (685.5,1145.2)

8.26

<.001

0.108

7.30 pm-8.30 pm

715.3 (482.1,948.6)

6.36

<.001

0.064

After school (3.30 pm-8.30 pm)

1018.1 (875.4,1160.7)

14.8

<.001

0.137

Model 2

3.30 pm-4.30 pm

871.9 (677.3,1066.5)

9.29

<.001

0.163

4.30 pm-5.30 pm

1115.3 (868.1,1362.5)

9.36

<.001

0.147

5.30 pm-6.30 pm

942.2 (714.4,1170.1)

8.58

<.001

0.125

6.30 pm-7.30 pm

901.5 (670.5,1132.5)

8.09

<.001

0.114

7.30 pm-8.30 pm

678.8 (451.8,905.9)

6.20

<.001

0.077

After school (3.30 pm-8.30 pm)

1000.6 (850.0,1151.2)

13.78

<.001

0.144


Model 1: Unadjusted

Model 2: Adjusted for gender, age, BMI SDS, IMD, daylight, pubertal status.

Beta = mean increase in counts per hour associated with a 1 minute increase in time outdoors

CI = confidence interval

Cooper et al. International Journal of Behavioral Nutrition and Physical Activity 2010 7:31   doi:10.1186/1479-5868-7-31

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