Table 1 Statistical results for all variables (N = 8459).

From: How family structure influences middle-school students’ involvement in physical exercise and their academic achievement in China

Variables

M

SD

Dependent

 Physical exercise

2.49

1.47

 Academic achievement

230.55

80.31

Independent

 Family structure

  Mother–father family

0.62

0.45

  Single-mother family

0.15

0.34

  Single-father family

0.06

0.18

  Family with both parents absent

0.16

0.41

 Parental input

  Academic and nonacademic supervision

14.26

2.15

  Parent–child interaction

22.10

3.57

  Family cultural capital

48.23

23.62

  Family socioeconomic status

46.10

13.27

 Control

  Household registration (agriculture = 1)

0.62

0.45

  Only child (yes = 1)

0.68

0.38

  Residence (native = 1)

0.52

0.21

  Siblings

1.09

0.66

  Self-rated health status

3.98

0.97

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