Table 1 Demographic details for the reference interval study population
Group | No | Maternal age, years* | Gestational age, weeks* |
|---|---|---|---|
T1 | 705 | 28 (16-46) | 8.6 (1.3-12.6) |
T1a | 245 | 28 (16-45) | 6.6 (1.3-7.6) |
T1b | 460 | 28 (16-46) | 10 (8-12.6) |
T2 | 692 | 28 (17-44) | 18.1 (13-25.6) |
T2a | 453 | 28 (17-43) | 16.4 (13-19.6) |
T2b | 239 | 28 (17-44) | 22.4 (20-25.6) |
T3 | 380 | 27 (16-47) | 31.5 (26-40.3) |
T3a | 228 | 28 (17-43) | 29.3 (26-32.6) |
T3b | 152 | 27 (16-47) | 35 (33-40.3) |