Physical performance tasks were linked to the PROMIS physical function metric in patients undergoing hemodialysis.

ABSTRACT:

Objectives

To investigate whether a multi-item performance outcome measure, the physical performance test (PPT), can be calibrated to a common scale with patient-reported outcome measures, using the Patient-Reported Outcomes Measurement Information System (PROMIS) physical function (PF) metric.

Study design and setting

We analyzed baseline data (N = 1,113) from the CONVINCE study, an international trial in end-stage kidney disease patients comparing high-dose hemodiafiltration with high-flux hemodialysis. Assumptions of item response theory (IRT) modelling were investigated for the combined set of the nine-item PPT and a four-item PROMIS PF short form (PROMIS-PF4a). We applied unidimensional IRT linking for calibrating the PPT to the PROMIS PF metric.

Results

Although

SUBMITTER: Liegl G 

PROVIDER: S-EPMC10495039 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature