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Table 2 Results of multilevel model analysis on the intervention on children's recess MVPA (% of total recess)

From: Children's physical activity levels during school recess: a quasi-experimental intervention study

 

Model 1

Model 2

 

β (SE)

95%CI

p

β (SE)

95%CI

p

Constant

14.20 (3.04)

8.24 to 20.16

<0.001**

23.88 (9.22)

5.81 to 41.94

0.009**

Baseline MVPA

0.49 (0.07)

0.36 to 0.62

<0.001**

0.37 (0.07)

0.24 to 0.49

<0.001**

Intervention

5.95 (2.97)

0.14 to 11.77

0.045*

4.5 (2.83)

-1.05 to 10.1

0.112

Sex

NE

  

-7.15 (1.42)

-9.94 to -4.36

<0.001**

Age

NE

  

-0.13 (0.62)

-1.34 to 1.09

0.841

BMI

NE

  

-0.55 (0.24)

-1.03 to -0.07

0.024*

Recess duration

NE

  

0.10 (0.07)

-0.04 to 0.24

0.147

Random

      

School Level

40.15 (15.44)

  

35.45 (13.8)

  

Child Level

125.17 (12)

  

99.10 (9.93)

  

Deviance

1889.766

  

1698.943

  
  1. Abbreviations: MVPA = Moderate-to-Vigorous Physical Activity; CI = Confidence Interval; β = Regression coefficient; SE = Standard Error; NE = Not entered.
  2. Model 1 is the crude analysis, where the intervention effect is controlled for baseline physical activity. For the intervention variable, the control group is the reference category). Model 2 is the adjusted analysis, where the effect of the intervention is corrected for sex (boy is the reference category), BMI, age and recess time. * P < 0.05; **P < 0.01.
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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