showed a trendp = 0.61
Although no differences were found, the pessary group showed a trend towards a lower rate of perinatal adverse outcomes, being 11.1 % in the cerclage group and 3.7 % in the pessary group [RR: 0.33, 95 % CI: 0.04–3.01, p = 0.61] and NICU admission rates were lower [14.8 %] as compared to the cerclage group [38.5 %] [RR: 0.38, 95 % CI: 0.14–1.08, p = 0.066].