Table 2 Four-tier risk model for delivery of neonates with different low birthweight cut-offs.
TIER | SPINT1 MoM cut-off | % (no) within tier | Birthweight < 3rd centile | Birthweight < 5th centile | Birthweight < 10th centile | Birthweight < 20th centile | Birthweight < 5th centile and nursery admission |
|---|---|---|---|---|---|---|---|
1: High risk | <0.63 | 7.1% (71) | 14.1% | 19.7% | 28.2% | 46.5% | 7.0% |
2: Normal risk | 0.63–1.1 | 57.0% (569) | 2.3% | 4.4% | 11.8% | 27.4% | 0.4% |
3: Lower risk | 1.1–1.6 | 26.8% (268) | 1.1% | 3.0% | 6.3% | 14.9% | 0.4% |
4: Lowest risk | >1.6 | 9.1% (91) | 0.0% | 1.1% | 1.1% | 6.6% | 0.0% |
