showed a trendP = 0.05
Subgroup analysis for patients with adhesion showed a trend towards an increase in clinical pregnancy rate in the ≤ 120 days group compared to > 120 days group (RR = 0.79, 95% CI 0.62-1.00, P = 0.05; heterogeneity: not applicable, Fig. 6 B), however, statistical significance was not reached.