The Short Physical Performance Battery is a valid tool in survivors of critical illness: international clinimetric secondary analysis

Abstract

Purpose: Evaluate the clinimetric properties and clinical utility of the Short Physical Performance Battery (SPPB) in survivors of critical illness up to 6 months post-hospital discharge. Materials and methods: Clinimetric analysis of three international datasets (n = 488 ICU survivors) from the United States and Australia. Results: At hospital discharge, the SPPB demonstrated moderate-to-excellent construct validity with the six-minute walk test (rho = 0.81, p < 0.001), Timed Up and Go (TUG) (rho = −0.87, p < 0.001), and dual TUG (rho = −0.75, p < 0.001); and fair-to-moderate construct validity with handgrip and quadriceps strength. At hospital discharge it predicted minimal to mild limitat..