Table 1 Descriptive statistics for major variables

Years of completed schooling

7.270

4.098

Have urban hukou at age 7 or younger

21.12%

0.408

Han ethnic groups

91.62%

0.277

Age

44.165

13.116

Female

51.64%

0.500

Parental years of schooling

4.491

4.309

Father’s ISEI

45.477

9.852

Father’s ISEI is missing

72.89%

0.445

Father was a member of CCP when respondent was 14

9.87%

0.298

Sibling number

3.349

1.769

Ranking among siblings at birth

2.681

1.536

Have brother(s)

87.06%

0.336

Have sister(s)

81.24%

0.390

Ratio of female among siblings

48.35%

0.241

N

5,271