Table 2

Sociodemographic differences between one child and sibling families, n (%)

One child familiesSibling familiesp value
Total, n=41972341 (56)1856 (44)<0.0001
Area
    Hangzhou (urban), n=15771440 (61)137 (7)<0.0001
    Xiaoshan (rich rural), n=1388765 (33)623 (33)
    Chunan (poor rural), n=1232136 (6)1096 (59)
Sex
    Male, n=21531346 (57)807 (43)<0.0001
    Female, n=2044995 (42)1049 (57)
Parents’ education
    Neither completed middle school, n=1217454 (19)763 (41)<0.0001
    One completed middle school, n=1133432 (18)701 (38)
    Both completed middle school, n=18461454 (62)392 (19)
Household income
    <$150/month, n=1594685 (29)909 (49)<0.0001
    >$150/month, n=17841170 (50)614 (33)