Table 1.
Odds of indicators of placental insufficiency after univariate logistic regression, per centile decrease in EFW or AC between 20 and 36 weeks, and 20–28 weeks, compared to previously published odds per centile decrease in EFW or AC between 28 and 36 weeks [11]
| Outcome | Growth parameter | Odds ratio (95% CI) of outcome per centile decrease from: | |||||
|---|---|---|---|---|---|---|---|
| 20–36 weeks | P | 20–28 weeks | P | 28–36 weeks | P | ||
| CPR < 5th centile [12] (n = 302) | EFW |
1.025 (1.009–1.040) |
0.001 |
1.013 (0.996–1.031) |
0.13 |
1.024 (1.005–1.042) |
0.01 |
| AC |
1.014 (0.999–1.028) |
0.07 |
1.005 (0.989–1.022) |
0.52 |
1.015 (0.997–1.032) |
0.10 | |
| Umbilical artery pH < 7.15 at birth (n = 238) | EFW |
1.027 (1.009–1.045) |
0.002 |
1.017 (0.996–1.038) |
0.11 |
1.024 (1.003–1.045) |
0.02 |
| AC |
1.031 (1.013–1.048) |
0.0005 |
1.021 (1.002–1.041) |
0.03 |
1.022 (1.002–1.041) |
0.03 | |
| ADP low body fat percentage [13] (n = 136) | EFW |
1.016 (0.991–1.041) |
0.22 |
0.995 (0.968–1.023) |
0.74 |
1.033 (1.001–1.067) |
0.047 |
| AC |
1.028 (1.001–1.056) |
0.04 |
1.005 (0.980–1.030) |
0.70 |
1.036 (1.005–1.068) |
0.02 | |
CI confidence interval, EFW estimated fetal weight, AC abdominal circumference, CPR cerebroplacental ratio, ADP air displacement plethysmography. Participant numbers included for each outcome refer to those contributing to the 20–28- and 20–36-week growth velocity analyses