Table 5.
Comparison of birth outcomes in each group.
| Group | Live birth | Termination/stillbirth | Total |
|---|---|---|---|
| NT (mm) | |||
| <2.5 | 203 (96.7) | 7 (3.3) | 210 |
| 2.5–2.9 | 220 (88.4) | 29 (11.6) | 249 |
| 3.0–3.4 | 376 (80.3) | 92 (19.7) | 468 |
| 3.5–4.4 | 357 (73.3) | 130 (26.7) | 487 |
| 4.5–5.4 | 124 (57.7) | 91 (42.3) | 215 |
| 5.5–6.4 | 36 (33.6) | 71 (66.4) | 107 |
| ≥6.5 | 21 (13.0) | 141 (87.0) | 162 |
| χ2 | 433.90 | ||
| p-value | <0.0001 | ||
| Feature of ultrasound | |||
| A | 203 (96.7) | 7 (3.3) | 210 |
| B | 973 (82.0) | 214 (18.0) | 1,187 |
| C | 156 (56.9) | 118 (43.1) | 274 |
| D | 5 (2.2) | 222 (97.8) | 227 |
| Total | 1,337 (70.4) | 561 (29.6) | 1898 |
| χ2 | 619.96 | ||
| p-value | <0.0001 | ||