Bastiaan Sallevelt

75 Evaluation of clarity of the STOPP/START criteria Declarations Authors’ contributions Authorship eligibility is based on the four ICMJE authorship criteria. All authors certify that they have participated sufficiently in the work to take public responsibility for the content. Study concept and design: BS, CH, WK, EP, TE, IW. Data acquisition: BS, CH, WK, IW. Analysis and/or interpretation of data: BS, CH, WK, EP, TE, IW. Drafting the manuscript: BS. Revising the manuscript critically for important intellectual content: BS, CH, WK, EP, TE, IW. We have not received substantial contributions from non-authors. Competing interests The author(s) declare that they have no competing interests. Data availability statement All data relevant to the study are included in the article or uploaded as Supplementary Information. Ethics approval Ethics approval was not required for this appraisal study since no humans or animals were involved. Funding No funding was received for conducting this study. Informed consent Not applicable. Trial registration Not applicable. 2