Table 1 Characteristics of mothers and newborns (n = 3267)
From: Temperature during pregnancy influences the fetal growth and birth size
| Â | Number | Percent |
|---|---|---|
Characteristics of mothers | ||
 Age in years, n = 3264 | ||
  <20 | 486 | 14.9 |
  20 to <30 | 1868 | 57.2 |
  ≥30 | 910 | 27.9 |
 Early-pregnancy BMI (kg/m2), n = 3257 | ||
  <18.5 | 916 | 28.0 |
  18.5 to <25.0 | 2151 | 65.9 |
  ≥25.0 | 200 | 6.1 |
 Education years | ||
  0 | 1056 | 32.3 |
  1~6 | 874 | 26.8 |
  ≥7 | 1337 | 40.9 |
 Parity, n = 3252 | ||
  0 | 1030 | 31.7 |
  1 | 914 | 28.1 |
  2 | 699 | 21.5 |
  3 | 358 | 11.0 |
  ≥4 | 251 | 7.7 |
Characteristics of newborns | ||
 Male | 1663 | 50.9 |
 Birth weight (<2500 g) | 997 | 30.5 |
 Birth length (<47 cm), n = 3256 | 999 | 30.7 |
 Gestation week at birth <37 | 259 | 7.9 |
 Season at birth | ||
  Winter (October to February) | 1564 | 47.9 |
  Hot and dry (March to May) | 694 | 21.2 |
  Monsoon (June to September) | 1009 | 30.9 |