Variable | ASD(N = 1389), Median (IQR)/N (%) | TD(N = 1190), Median (IQR)/N (%) | Z/χ2 | P |
---|---|---|---|---|
Age, years | 3.94(3.11,4.90) | 4.40(3.37,5.36) | -6.101 |  < 0.001 |
Gender | ||||
 Male | 1138(81.9) | 784(65.9) | 86.931 |  < 0.001 |
 Female | 251(18.1) | 406(34.1) | ||
Residence | ||||
 Urban | 1036(74.6) | 1058(88.9) | 90.230 |  < 0.001 |
 Rural | 334(24.0) | 117(9.8) | ||
 Miss | 19(1.4) | 15(1.3) | ||
Annual family income, RMBa | ||||
  < 50,000 | 615(44.3) | 307(25.8) | 146.726 |  < 0.001 |
 50,000 ~ 100,000 | 403(29.0) | 290(24.4) | ||
  > 100,000 | 313(22.5) | 506(42.5) | ||
 Miss | 58(4.2) | 87(7.3) | ||
Paternal education level | ||||
 Primary education | 22(1.6) | 7(0.6) | 48.743 |  < 0.001 |
 Secondary education | 553(39.8) | 333(28.0) | ||
 Secondary education above | 798(57.5) | 838(70.4) | ||
 Miss | 16(1.1) | 12(1.0) | ||
Maternal education level | ||||
 Paternal education level | 33(2.4) | 14(1.2) | 110.647 |  < 0.001 |
 Primary education | 623(44.9) | 309(26.0) | ||
 Secondary education | 727(52.3) | 863(72.5) | ||
 Miss | 6(0.4) | 4(0.3) |