Table 4 Comparison of the ability of the growth chart in predicting adverse perinatal outcomes

MC & DC twins

All live births

n = 309

n = 1611

Neonatal death

2(0.7)

3(0.2)

3.49(0.58, 20.99)

0.620(0.380, 0.860)

Adverse events ^a

113(36.6)

215(13.4)

3.74(2.85, 4.92)

0.611(0.584, 0.638)

Birth without defect

n = 267

n = 1525

Neonatal death

2(0.75)

3(0.2)

3.82(0.64, 22.95)

0.626(0.386, 0.866)

Adverse events ^a

84(31.5)

146(9.6)

4.32(3.17, 5.89)

0.624(0.592, 0.656)

Hadlock

All live births

n = 516

n = 1404

Neonatal death

2(0.4)

3(0.2)

1.81(0.30,10.91)

0.566(0.326. 0.806)

Adverse events ^a

137(26.6)

191(13.6)

2.30(1.79, 2.94)

0.590(0.561, 0.619)

Birth without defect

n = 469

n = 1323

Neonatal death

2(0.4)

3(0.23)

1.88(0.31,11.27)

0.569(0.329, 0.809)

Adverse events ^a

106(22.6)

124(9.4)

2.81(2.12, 3.74)

0.614(0.580, 0.648)