Testing Measurement Invariance of the Chinese Version of the Strategies Used by Patients to Promote Health Among Patients With Cancer

Abstract

Background and Purpose: The Chinese version of the Strategies Used by Patients to Promote Health (C-SUPPH) is a self-report instrument used to measure self-efficacy among patients with cancer. The purpose of this article is to examine measurement invariance of C-SUPPH using data of 764 cancer patients recruited in China. Methods: Multigroup confirmatory factor analysis (CFA) models were applied across the selected sociodemographic groups of gender, age, education, and monthly income levels. Results: The factorial structure and factor loadings (relationships between items and their underlying factors) of C-SUPPH were invariant across all sociodemographic groups. Conclusions: The findings showed that the C-SUPPH measures the same latent constructs/factors in the same way when administered to different sociodemographic groups and thus can be readily applied to studying self-efficacy of cancer patients in China.