The prevalence of occult leiomyosarcoma at surgery for presumed uterine fibroids: a meta-analysis

Table 2 Meta-analyses of evidence base Bayesian model generalized linear mixed model

Dataset	Number of studies	Posterior mean; rate per 1000 surgeries	95 % credible interval	Rate per 1000 surgeries	95 % confidence interval
All studies	133	0.51	0.16, 0.98	0.79	0.5, 1.26
Prospective studies	64	0.12	0, 0.75	0.48	0.14, 1.72
Retrospective studies	70	0.57	0.17, 1.13	0.87	0.52, 1.46
All studies, N ≥ 100	57	0.55	0.17, 1.06	0.81	0.49, 1.33
Prospective studies, N ≥ 100	13	0.06	0, 0.62	0.45	0.06, 3.15
Retrospective studies, N ≥ 100	44	0.59	0.18, 1.15	0.85	0.5, 1.45
FDA dataset	9	1.86	0.7, 3.32	2.02	1.06, 3.84