Our new meta analysis led by @SylvieAucoin now out in @_Anesthesiology. Seems like a good time for a thread on choosing a frailty instrument for #periop care 1/ 2/ There are dozens of frailty instruments (big problem) but in reality 4 are commonly used: Frailty Index, Frailty Phenotype, Clinical Frailty Scale, Edmonton Frail Scale