Additional file 1 of Reporting and methodological quality of systematic literature reviews evaluating the associations between e-cigarette use and cigarette smoking behaviors: a systematic quality review

Additional file 1. Appendix 1: Search strategy. Appendix 2: List of articles reviewed in full text. Appendix 3: Full-text articles excluded (with reasons for exclusion). Appendix 4: A list of the included studies. Appendix 5: Characteristics of systematic reviews on e-cigarette use and combustible cigarette smoking initiation or cessation. Appendix 6: Characteristics of included studies. Appendix 7: Methodology and included studies in the included systematic reviews. Appendix 8: Risk of bias, statistical analysis, and heterogeneity methodology of included systematic reviews. Appendix 9: Scoring results of methodological quality using the AMSTAR 2 tool. Appendix 10: Summary of methodological quality using the AMSTAR 2 tool. Appendix 11: Scoring results of quality of reporting using the PRISMA tool. Appendix 12: Summary of quality of reporting using the PRISMA tool.