| After correction for the differences in BMI and nulliparity, the difference in AP and AIx-75 remained non-significant. |
| In multivariate regression analysis, nulliparity and epidural analgesia were the strongest risk factors for a prolonged second stage. |
| Examples of these are obesity, nulliparity and never having breastfed, having a first pregnancy after the age of 37 years and excessive alcohol intake. |
| Compared with low multiparity, mothers and babies of nulliparity and grand multipara are at higher risk. |
| Attention should be paid to subjects of nulliparity and grand multiparity for their different problems. |
| Forceps-assisted delivery, nulliparity and high birthweight were significant risk factors in all three regions. |
