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01-04-2015 | Brief Communication | Uitgave 4/2015

Quality of Life Research 4/2015

Reliability and validity of a Chinese version of the Oral Health Impact Profile for edentulous subjects

Quality of Life Research > Uitgave 4/2015
Song-lin He, Jin-hua Wang



The aim of this study was to evaluate the reliability and validity of the Chinese version of the Oral Health Impact Profile for edentulous subjects (OHIP-EDENT-C).


After translation and cross-cultural adaptation following international guidelines, 162 complete denture wearers were recruited to complete the questionnaire. The reliability of the OHIP-EDENT-C was evaluated using internal consistency and test–retest methods. The validity of the OHIP-EDENT-C was analyzed by construct validity and convergent validity. Construct validity was determined based on factor analysis and convergent validity by analyzing the correlation between OHIP-EDENT-C subscale scores and the global question.


Cronbach’s alpha value (internal reliability) for the total OHIP-EDENT-C score was 0.972, and the intraclass correlation coefficient value (test–retest reliability) was 0.763 (similar to the original OHIP-EDENT). Construct validity was determined by factor analysis, extracting five factors, accounting for 74.31 % of the variance. All items had factor loadings above 0.40. In terms of convergent validity, the OHIP-EDENT-C subscale was significantly highly correlated to the global question.


The results suggest that the OHIP-EDENT-C is a reliable and valid measure to evaluate OHRQoL for edentulous subjects in China.

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