Fig 1.
PRISMA flow diagram for the study selection process.
Fig 2.
Forest plot of the RRs for the association between frailty and inpatient mortality.
Fig 3.
TSA of inpatient mortality predicted by frailty.
Fig 4.
Forest plot of the RRs for the association between frailty and 30-day mortality.
Fig 5.
TSA of 30-day mortality predicted by frailty.
Fig 6.
Forest plot of the RRs for the association between frailty and 1-year mortality.
Fig 7.
TSA of 1-year mortality predicted by frailty.