Fig. 1From: Systematic review of the utility of the frailty index and frailty phenotype to predict all-cause mortality in older peoplePRISMA 2020 flow diagram of included studies. *Search was carried out from 1 January 2000 to 22 January 2021. Update searches were carried out on 21 September 2021 and 26 July 2022, but did not identify any more eligible studiesBack to article page