Cross-Cultural Measurement Invariance of Adolescent Self-Report on the Pediatric Quality of Life Inventory™ 4.0.

This study evaluated the cross-cultural measurement invariance of the Pediatric Quality of Life Inventory version 4.0 (PedsQL™) among adolescents sampled from Bulgaria, Croatia, India, Indonesia, Nigeria, Serbia, and Turkey. The multiple-indicator multiple-cause (MIMIC) model was used, which allowed controlling of demographic variables (i.e., age, gender, and socioeconomic status). Significant effects of country on scores within the PedsQL™ domains were observed, with up to 17 items showing differential item functioning (DIF) across the countries. We did not find support for cross-cultural measurement invariance hypotheses for scores on the PedsQL™ adolescent self-report in this study. Researchers should use caution in making cross-cultural quality of life comparisons while using the PedsQL.