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Table 5 Total effects of household/family characteristics on school characteristics and the moderating effects of proximity to school and adolescent’s gender for sub-samplea (Step 1 of mediation analysis)

From: Family, school and individual characteristics associated with adolescents’ physical activity at school in Hong Kong: the iHealt(H) study

Household / family characteristics

Effect

School PA-friendly index‡

Social support for PA from peers

  

b (95% CI)

p

eb (95% CI)

p

Highest educational attainment in the

Main - total

0.09 (− 0.00,0.19)

0.051

1.09 (1.03,1.15)

0.002

household

In boys

0.20 (0.06,0.33)

0.004

N/A

N/A

 

In girls

0.02 (−0.10,0.13)

0.777

N/A

N/A

Number of motor vehicles in the household

Main - total

0.11 (−0.06,0.28)

0.212

0.91 (0.82,1.01)

0.090

@ below-average proximity of home to school

N/A

N/A

1.00 (0.88,1.14)

0.966

@ average proximity of home to school

N/A

N/A

0.87 (0.78,0.98)

0.021

@ above-average proximity of home to school

N/A

N/A

0.76 (0.63,0.92)

0.004

Number of children in the household

Main - total

0.01 (−0.16,0.18)

0.909

1.23 (1.11,1.36)

< 0.001

Neighbourhood self-selection related to PA

Main - total

−0.04 (− 0.21,0.12)

0.607

1.01 (0.91,1.12)

0.877

In boys

N/A

N/A

0.91 (0.78,1.05)

0.186

In girls

N/A

N/A

1.11 (0.97,1.28)

0.127

Neighbourhood socio-economic status

Main - total

0.19 (−0.17,0.55)

0.306

1.16 (0.96,1.41)

0.128

Household income

Main - total

−0.03 (− 0.09,0.03)

0.282

0.98 (0.95,1.02)

0.371

Parental rules for PA

Main - total

−0.02 (− 0.05,0.01)

0.262

1.03 (1.01,1.05)

0.007

Social support for PA from parents

Main - total

0.17 (0.04,0.31)

0.013

1.41 (1.30,1.53)

< 0.001

PA equipment at home / neighbourhood

Main - total

0.05 (−0.01,0.10)

0.079

1.06 (1.02,1.09)

< 0.001

In boys

N/A

N/A

1.10 (1.05,1.15)

< 0.001

In girls

N/A

N/A

1.02 (0.97,1.06)

0.430

Parental leisure-time PA^

Main - total

0.00 (−0.03,0.03)

0.998

1.02 (1.01,1.04)

0.007

In boys

N/A

N/A

1.05 (1.01,1.08)

0.003

In girls

N/A

N/A

1.01 (0.99,1.03)

0.227

Parental transportation PA^

Main - total

−0.01 (−0.03,0.02)

0.531

1.00 (0.99,1.02)

0.704

 

@ below-average proximity of home to school

N/A

N/A

0.99 (0.97,1.01)

0.339

 

@ average proximity of home to school

N/A

N/A

1.01 (0.99,1.02)

0.476

 

@ above-average proximity of home to school

N/A

N/A

1.02 (1.00,1.04)

0.058

  1. a sub-sample of adolescents who wore accelerometer; PA = physical activity; ‡ consisting of items measuring PA equipment at school and school PA-friendly policy supporting after-school PA; b = regression coefficient; CI = confidence interval; eb = exponentiated regression coefficient; N/A denotes ‘no significant interaction’. ^ minutes converted to hours (by dividing by 60). These regression models were adjusted for confounders listed in Table S4
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International Journal of Behavioral Nutrition and Physical Activity

ISSN: 1479-5868

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