Fig. 2

Pooled global uterine contractility and implantation rate. Forest plot of odds ratios (OR) and 95% confidence intervals (CI) for studies evaluating uterine peristalsis and clinical pregnancy. The blue squares in each study indicate the OR, the size of the squares indicates the study weight, and the horizontal lines indicate the 95% CI. The data in blue diamond represent the pooled OR in patients with high vs. low uterine contractility and 95% CI. Overall estimates are presented in the fixed- and random-effects models. The prediction interval is defined as the interval within which the effect size of a new study would fall if this study were selected at random from the same population of studies already included in the meta-analysis