Main Data for Clinical Trials Registry use by Systematic reviews and Meta-analyses in Pregnancy and Childbirth Journals

This data represents the coding results for the top 20 Journals in the Pregnancy and Childbirth literature. A 1 indicates that a systematic review or meta-analysis searched clinical trials registry, while a 0 indicates that the trials registry was not searched. The columns represent the clinical trials registries that were searched, while individual rows are representative of the study in question (except for the sum rows).