Published online by Cambridge University Press: 01 August 2014
Pregnancy duration was examined in 389 multiple pregnancies out of 29,656 general deliveries. Mean duration of multiple pregnancy appears to be 258.5 days, i.e., 23.1 days shorter than general pregnancy, which is statistically significant (t = 32.16, P < 0.001).
There is high linear positive correlation between fetal weight and length, and between these and maternal abdominal circumference. A highly significant multiple correlation exists between fetal weight and length and maternal abdominal circumference in multiple pregnancy.