variable

The mean

The standard deviation

The minimum value

The maximum

Sample size

Children’s health

0.309

0.959

4.769

5.525

1371

The child’s age

11.49

3.835

0

18

1371

Children’s gender

0.532

0.499

0

1

1371

The one-child

0.588

0.492

0

1

1371

first-born

0.759

0.428

0

1

1371

My father height

167.8

6.148

148

187.4

1371

Mother’s height

156.7

6.130

65

173.7

1371

Father’s education

9.786

3.291

0

18

1371

Mother education

8.630

3.523

0

17

1371

Family size

3.864

1

3

8

1371

Family economic situation

7.790

0.855

5.553

9.277

1371

Medical accessibility

9.015

11.03

0

180

1371