Additional file 1: of Survival estimates stratified by the Nottingham Prognostic Index for early breast cancer: a systematic review and meta-analysis of observational studies

Appendix 1. NPI category cut-offs. Appendix 2. Electronic search strategies. Appendix 3. Critical appraisal of accepted studies. Appendix 4. Data extraction procedures. Appendix 5. Reported five and ten-year survival per study dataset. (DOCX 71 kb)