Variable | All measurements (n = 109) | Second trimester only (n = 68) | Third trimester only (n = 58) |
---|---|---|---|
Number of biometry measurements achieved (strict) | 2 (0–4) | 2 (0–4) | 2 (0–4) |
Number of biometry measurements achieved (including relaxed) | 3 (0–4) | 3 (0–4) | 3 (0–4) |
Estimated gestational age (days) | |||
 Stricta | 195 ± 49 (n = 109) | 158 ± 27 (n = 60) | 242 ± 23 (n = 49) |
 Including relaxeda | 194 ± 51 (n = 122) | 155 ± 28 (n = 67) | 243 ± 24 (n = 55) |
p-valueb | 0.37 | 0.44 | 0.58 |