Reliability and Validity of the Turkish Version of the Chelsea Critical Care Physical Assessment Tool (CPAx-TR)

Abstract

Objective: Assessing physical function in Intensive Care Unit(ICU) patients is essential for clinical decision-making. The Chelsea Critical Care Physical Assessment Tool(CPAx) is a validated instrument developed to evaluate functional status. This study aimed to cross culturally adapt the CPAx into Turkish and examine its validity and reliability. Materials and Methods: The tool was translated into Turkish using forward-backward translation and administered to 60 ICU patients. For the reliability analysis, internal consistency was evaluated using Cronbach's alpha coefficient. The construct validity of the CPAx was tested by factor analysis. The criterion validity was performed using the correlation between the CPAx and the Physical Function ICU Test (PFIT). Results: The internal consistency of the tool was found to be high and Cronbach's alpha value was calculated as 0.960. All item-total score correlations were above 0.30. Exploratory Factor Analysis revealed that all items were grouped into a single factor. In Confirmatory Factor Analysis, the model showed good fit (CMIN/ df=1.207;CFI=0.993;NFI=0.959;GFI=0.907; RMSEA=0.059). Furthermore, the correlation analysis with P-FIT revealed a strong positive relationship (r=0.892; p<0.001). Conclusion: It has been determined that the CPAx-TR shows acceptable levels of validity and reliability in evaluating functionality in ICU patients.