Duration of gestation (wk) | Â | Â | |||||
---|---|---|---|---|---|---|---|
 | n (%) | Unadjusted β coefficient (95% CI) | P | Adjusted β coefficient (95% CI), Model 1b | p | Adjusted β coefficient (95% CI), Model 2c | p |
All women | |||||||
  ≤ 20 wk. log cortisol | 783 (100%) | −0.43 (− 0.66, − 0.20) | <.001 | − 0.42 (− 0.66, − 0.17) | 0.001 | − 0.39 (− 0.64, − 0.14) | 0.002 |
 28 wk. log cortisol | 741 (94.6%) | −0.43 (− 0.67, − 0.19) | <.001 | −0.44 (− 0.73, − 0.15) | 0.003 | −0.49 (− 0.78, − 0.20) | 0.001 |
 36 wk. log cortisol | 658 (84.0%) | −0.25 (− 0.49, 0.00) | 0.050 | −0.29 (− 0.54, − 0.02) | 0.032 | −0.23 (− 0.49, 0.03) | 0.084 |
 Change log cortisold | 654 (83.5%) | 0.09 (−0.08, 0.27) | 0.297 | 0.08 (−0.11, 0.27) | 0.409 | 0.07 (−0.12, 0.27) | 0.447 |
Female fetal sex | |||||||
  ≤ 20 wk. log cortisol | 411 (100%) | −0.19 (− 0.51, 0.12) | 0.233 | − 0.25 (− 0.59, 0.09) | 0.151 | −0.24 (− 0.59, 0.10) | 0.160 |
 28 wk. log cortisol | 389 (94.6%) | − 0.37 (− 0.71, − 0.03) | 0.031 | −0.37 (− 0.77, 0.04) | 0.079 | −0.37 (− 0.78, 0.04) | 0.077 |
 36 wk. log cortisol | 338 (82.2%) | 0.20 (− 0.11, 0.51) | 0.212 | 0.12 (− 0.21, 0.45) | 0.468 | 0.11 (− 0.22, 0.43) | 0.525 |
 Change log cortisold | 338 (82.2%) | 0.21 (−0.02, 0.44) | 0.073 | 0.19 (−0.05, 0.43) | 0.123 | 0.19 (−0.06, 0.43) | 0.129 |
Male fetal sex | |||||||
  ≤ 20 wk. log cortisol | 372 (100%) | −0.68 (− 1.02, − 0.34) | <.001 | −0.61 (− 0.97, − 0.25) | 0.001 | −0.57 (− 0.93, − 0.20) | 0.003 |
 28 wk. log cortisol | 348 (93.5%) | −0.50 (− 0.84, − 0.16) | 0.004 | −0.44 (− 0.85, − 0.03) | 0.037 | −0.52 (− 0.93, − 0.10) | 0.016 |
 36 wk. log cortisol | 316 (84.9%) | −0.82 (− 1.20, − 0.43) | <.001 | −0.85 (− 1.26, − 0.44) | <.001 | −0.74 (− 1.15, − 0.32) | 0.001 |
 Change log cortisold | 316 84.9%) | − 0.04 (− 0.32, 0.24) | 0.775 | −0.04 (− 0.35, 0.27) | 0.795 | −0.05 (− 0.37, 0.26) | 0.752 |