Objective: to estimate the prevalence and synthesize diverse evidence about the relationship between frailty and delirium in hospitalized older adults.
Method: a systematic review with meta-analysis in which observational studies conducted with older adults about frailty, delirium and hospitalization, were selected without time of language restrictions. The search was conducted in the MEDLINE, EMBASE, CINAHL, Scopus, Web of Science and CENTRAL databases during August 2021.