Table 2 Gestational age distribution for (i) the final study cohort, and (ii) the previous study cohort used to derive a model for optimal weight using only neonatal measurements
From: Validation of a model for optimal birth weight: a prospective study using serial ultrasounds
Gestation | Study cohort | Previous study cohort | ||
|---|---|---|---|---|
N* | % | N** | % | |
14–17 weeks | 147 | 4 | 0 | 0 |
18–22 weeks | 578 | 16 | 0 | 0 |
23–27 weeks | 561 | 16 | 76 | 0 |
28–32 weeks | 550 | 16 | 258 | 0 |
33–39 weeks | 1,251 | 35 | 35,575 | 57 |
40–42 weeks | 452 | 13 | 26,837 | 43 |
Total | 3,539 | 62,746 | ||