showed a trendp = 0.93
Among nulliparous participants, the observed differences showed a trend in favour of progesterone (30.0% versus 15.9%, RR 1.88; 95% CI [1.03,3.43], interaction p = 0.93).
Among nulliparous participants, the observed differences showed a trend in favour of progesterone (30.0% versus 15.9%, RR 1.88; 95% CI [1.03,3.43], interaction p = 0.93).