Variable (No, %) | Duration of gestation, weeks | Birth weight, kg | ||
---|---|---|---|---|
Mean | SD | Mean | SD | |
Maternal characteristics | ||||
 Age at delivery | ||||
  <20 (12775, 5.38) | 39.06 | 2.10 | 3.327 | 0.578 |
  20-35 (178029, 74.93) | 38.99 | 1.85 | 3.429 | 0.556 |
  ≥35 (46781, 19.69) | 38.88 | 1.88 | 3.414 | 0.569 |
F/p value | 385.95/<.001 | 198.75/<.001 | ||
 Indigenous status | ||||
  Indigenous (4650, 1.96) | 38.68 | 2.32 | 3.295 | 0.626 |
  Non-indigenous (232935, 98.04) | 38.94 | 1.86 | 3.423 | 0.559 |
F/p value | 92.07/<.001 | 237.62/<.001 | ||
 Marriage | ||||
  Married/cohabiting (205243, 86.39) | 38.94 | 1.83 | 3.432 | 0.554 |
  Divorced/separated (28737, 12.10) | 38.96 | 2.13 | 3.343 | 0.593 |
  Never married (3605, 1.52) | 38.83 | 1.93 | 3.367 | 0.577 |
F/p value | 8.75/<.001 | 335.33/<.001 | ||
Parity | ||||
  Primiparity (99742, 41.98) | 39.09 | 1.96 | 3.369 | 0.560 |
  Multiparity (137843, 58.02) | 38.85 | 1.79 | 3.457 | 0.558 |
F/p value | 783.07/<.001 | 1438.93/<.001 | ||
Perinatal characteristics | ||||
 Gender | ||||
  Male (122374, 51.51) | 38.91 | 1.92 | 3.480 | 0.572 |
  Female (115211, 48.49) | 38.97 | 1.82 | 3.358 | 0.541 |
F/p value | 54.67/<.001 | 2848.04/<.001 | ||
 Mode of laboronset | ||||
  Spontaneous (132904, 55.94) | 39.02 | 1.89 | 3.408 | 0.545 |
  Induced (55341, 23.29) | 39.50 | 1.62 | 3.523 | 0.537 |
  Caesarean (49340, 20.77) | 38.06 | 1.78 | 3.338 | 0.608 |
F/p value | 8651.48/<.001 | 1501.11/<.001 | ||
 Duration of gestation at birth, wk | ||||
  ≥39 (160888, 67.72) | 39.85 | 0.77 | 3.574 | 0.449 |
  37-39 (61650, 25.95) | 37.77 | 0.42 | 3.272 | 0.461 |
  34-37 (11097, 4.67) | 35.36 | 0.76 | 2.675 | 0.472 |
  <34 (3950, 1.66) | 29.98 | 2.38 | 1.554 | 0.614 |
F/p value | 40154.50/<.001 | 40154.50/<.001 | ||
 Birth weight for gestation | ||||
  SGA (23161, 9.75) | 38.53 | 2.46 | 2.654 | 0.408 |
  AGA (214424, 90.25) | 38.98 | 1.79 | 3.503 | 0.510 |
F/p value | 1225.05/<.001 | 60148.60/<.001 |