Clinical Study
Influence of Second-Trimester Ultrasound Markers for Down Syndrome in Pregnant Women of Advanced Maternal Age
Table 4
Odds ratios for the ultrasound markers for Down syndrome.
|
Marker | Down syndrome | Odds ratio | Confidence interval (95%) | | | Absent | Present |
| Nuchal fold thickness ≥ 6 mm | Present | 35 | 12 | 14.9 | 6.7–33.0 | Absent | 823 | 19 |
| Intracardiac hyperechogenic focus | Present | 35 | 4 | 3.5 | 1.1–10.5 | Absent | 823 | 27 |
| Short femur length | Present | 2 | 1 | 14.2 | 1.3–161.7 | Absent | 856 | 30 |
| Structural fetal malformation | Present | 26 | 6 | 7.7 | 2.9–20.3 | Absent | 832 | 25 |
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