No women in the nifedipine group had
a prolongation of 7 weeks, whereas 25% of women in the progesterone
group had a prolongation of pregnancy of 7 weeks.
There is a signifi cant difference in the prolongation of pregnancy
between the nifedipine and the progesterone group ( p 0.000)
(Table II). The mean prolongation of pregnancy in the nifedipine
group was 16.63 days, and 40.14 days in the progesterone group,
which was signifi cant ( p 0.000) (Table II). Some 90% of women
in the nifedipine group and 82% of women in the progesterone
group were delivered by spontaneous vaginal delivery. There was
no signifi cant difference in the mode of delivery between the two
groups.