Characteristic | Taiwan n = 17441 | China n = 917 | Southeast Asia n = 1732 | p | |||
---|---|---|---|---|---|---|---|
 | n | % | n | % | n | % |  |
Infant sex | 0.99 | ||||||
  Boy | 9180 | 52.6 | 485 | 52.9 | 910 | 52.5 |  |
  Girl | 8261 | 47.4 | 432 | 47.1 | 822 | 47.5 |  |
Maternal ageabc | <0.0001d | ||||||
  <20 y | 225 | 1.3 | 0 | 0.0 | 121 | 7.0 |  |
  20–34 y | 14846 | 85.1 | 834 | 91.0 | 1539 | 90.0 |  |
  35 y | 2370 | 13.6 | 83 | 9.1 | 52 | 3.0 |  |
First bornbc | 8620 | 49.4 | 482 | 52.6 | 993 | 57.3 | <0.0001d |
Singletonbc | 16954 | 97.2 | 895 | 97.6 | 1710 | 98.7 | 0.0007d |
Family monthly incomeabc | |||||||
  <NT$30,000 | 1351 | 7.8 | 225 | 24.5 | 611 | 35.3 | <0.0001d |
  NT$30,000–69,999 | 9653 | 55.4 | 621 | 67.7 | 1072 | 61.9 |  |
  NT$70,000+ | 6437 | 36.9 | 71 | 7.7 | 49 | 2.8 |  |
Paternal educationabc | Â | Â | Â | Â | Â | Â | <0.0001d |
  0–9 y | 1666 | 9.6 | 247 | 26.9 | 733 | 42.3 |  |
  10–12 y | 6797 | 39.0 | 418 | 45.6 | 829 | 47.9 |  |
  13+ y | 8978 | 51.5 | 252 | 27.5 | 170 | 9.8 |  |
Maternal educationabc | <0.0001d | ||||||
  0–9 y | 1161 | 6.7 | 479 | 52.2 | 1214 | 70.1 |  |
  10–12 y | 7194 | 41.3 | 338 | 36.9 | 430 | 24.8 |  |
  13+ y | 9086 | 52.1 | 100 | 10.9 | 88 | 5.1 |  |
Place of residencebc | <0.0001d | ||||||
  Urban | 10319 | 59.2 | 526 | 57.4 | 770 | 44.5 |  |
  Rural | 7122 | 40.8 | 391 | 42.6 | 962 | 55.5 |  |
Length of stay in Taiwan, y | Â | - | Â | 3.3 | Â | 3.5 | Â |
Smoking during pregnancyabc | 586 | 3.4 | 5 | 0.6 | 0 | 0.0 | <0.0001d |
Pregnancy complications | Â | Â | Â | Â | Â | Â | Â |
  Diabetesbc | 430 | 2.5 | 15 | 1.6 | 8 | 0.5 | <0.0001d |
  Hypertensionac | 380 | 2.2 | 8 | 0.9 | 11 | 0.6 | <0.0001d |
  Pre-eclampsiabc | 141 | 0.8 | 4 | 0.4 | 1 | 0.1 | 0.0012d |
  Placenta previaac | 337 | 1.9 | 7 | 0.8 | 5 | 0.3 | <0.0001d |
  Placental abruptionbc | 79 | 0.5 | 4 | 0.4 | 0 | 0.0 | 0.02 |
First-time prenatal careac | <0.0001d | ||||||
  <3 m | 12693 | 72.8 | 601 | 65.5 | 1143 | 66.0 |  |
  3 m | 3922 | 22.5 | 210 | 22.9 | 405 | 23.4 |  |
  4+ m | 826 | 4.7 | 106 | 11.6 | 184 | 10.6 |  |
Number of prenatal visitsac | <0.0001d | ||||||
  <10 | 2586 | 14.8 | 203 | 22.1 | 415 | 24.0 |  |
  10 | 4333 | 24.8 | 230 | 25.1 | 456 | 26.3 |  |
  11+ | 10522 | 60.3 | 484 | 52.8 | 861 | 49.7 |  |