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Table 4 Before-school and class time multilevel analysis of MPA and VPA

From: School day segmented physical activity patterns of high and low active children

 

Before-school

Class time

 

MPA β (SE)

VPA β (SE)

MPA β (SE)

VPA β (SE)

Constant

3.8 (6.4)

−1.6 (2.9)

−5.0 (18.5)

2.4 (13.1)

Physical activity groupa

0.9 (0.3)††

0.2 (0.1)

0.7 (0.3)†

0.4 (0.3)

% variance explained

2.8

3.3

6.0

4.7

Child level variables

    

Sexb

−1.01 (0.8)

0.3 (0.3)

−0.4 (0.8)

0.6 (0.7)

Age

−0.04 (0.6)

0.2 (0.3)

0.8 (0.6)

0.3 (0.5)

BMI z-score

0.2 (0.1)

−0.1 (0.1)

0.3 (0.2)

−0.1 (0.1)

Maturity offset (years from APHV)

−0.4 (0.4)

0.02 (0.2)

−0.8 (0.4)

−0.1 (0.3)

IMD

0.01 (0.02)

−0.001 (0.01)

0.01 (0.02)

0.01 (0.01)

% variance explained

1.0

6.0

3.4

4.5

School level variables

    

Duration (min)

0.0001 (0.0001)

0.0001 (0.0001)

0.02 (0.1)

−0.001 (0.04)

No. enrolled students

0.002 (0.001)†

0.001 (0.001)

−0.01 (0.01)

−0.003 (0.004)

Playground area (m2·student-1)

0.1 (0.1)

0.15 (0.06)†

05 (0.5)

0.4 (0.3)

Average temperature (°C)

−0.1 (0.9)

−0.1 (0.04)

−0.1 (0.1)

−0.1 (0.1)

No. days rainfall

−0.5 (0.3)

−0.2 (0.1)

−0.1 (0.3)

−0.3 (0.3)

% variance explained

3.0

10.7

13.8

9.0

Overall model

    

% Total variance explained

6.5

17.4

20.3

14.4

School level variance

0.0

0.03 (0.03)

3.9 (2.1)

1.8 (1.0)

Child level variance

4.9 (0.5)

1.0 (0.1)

5.3 (0.5)

3.7 (0.4)

Total variance

4.9

1.0

9.2

5.5

Deviance

961.7

620.3

1010.9

928.9

ICC

0.0

0.03

0.42

0.32

  1. aFor Physical activity group the reference category is LOW. bFor Sex the reference category is girls. β (SE)
  2. values rounded to 1 decimal place for presentation purposes.
  3. †P < .05.
  4. ††P < .01.