Methodological Practices and Key Decision Points in Stepped-wedge Cluster Randomized Trials Published in High-Impact Journals-Supplementary material

It includes criteria for determining methodological variables, a summary of database retrieval strategies, basic information and methodological practice characteristics of ladder cluster randomized trials, and reports on ladder cluster randomized trials based on CONSORT SWCRT extension statements.

Appendix 1 presents the search strategies in Pubmed and Web of Science; Tables S2 and S3 provide the basic information and practical characteristics of each key methodological decision point included in the ladder cluster randomized trial; Table S4 presents the report on the inclusion of ladder cluster randomized trials based on the CONSORT SWCRT extension statement.