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Number of diagnostic variants identified by trio ES in relation to size of isolated NT at presentation
| NT (mm) | Number of cases | Diagnostic variants detected (%) |
|---|---|---|
| 3.5–4.4 | 63 | 1 (1.6) |
| 4.5–5.4 | 42 | 6 (14.2) |
| 5.5–6.4 | 22 | 2 (9.1) |
| 6.5–7.4 | 11 | 2 (18.2) |
| ≥7.5 | 14 | 4 (28.6) |
| Not specified | 7 | 1 (14.3) |
| Total | 159 | 16 (10.1) |
