 |
Logistic
regression model of neonatal mortality with the impact of twin pregnancy as a function of
GA. NOT adjusted for size at birth. Adjusted for sex, maternal smoking, maternal age,
mother's health, parity, prior stillbirth, prior neonatal death, congenital abnormality,
and year of birth. OR=odds ratio. Black line=log odds ratio; red lines=95% confidence
intervals. A horizontal reference line of zero indicates no difference between twins and
singletons. The curve was
similar to the one with adjustment for size at birth, but it climbed up after 34 weeks of
GA by a faster rate. |
