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Mean fetal fraction for each week of the first trimester among normal weight and obese women.
| ≤10w0d (n=19) | 10w1d–11w0d (n=96) | 11w1d–12w0d (n=215) | 12w1d–13w0d (n=336) | 13w1d–14w0d (n=89) | p-value | |
|---|---|---|---|---|---|---|
| Normal weight | 10.9 ± 4.1 | 11.7 ± 4.3 | 12.7 ± 4.6 | 12.8 ± 4.5 | 12.4 ± 4.8 | 0.21b |
| Obese | 9.0 ± 8.4 | 8.1 ± 4.5 | 8.8 ± 4.4 | 9.5 ± 4.5 | 9.6 ± 4.0 | 0.59b |
| p-value | 0.69a | <0.001a | <0.001a | <0.001a | 0.008a | -- |
Data are mean ± standard deviation.
Kruskal-Wallis equality-of-populations rank test
ANOVA
