, Volume 14, Issue 7, pp 1775-1781

Preliminary evidence on the measurement properties of the Chinese version of the child health questionnaire, parent form (CHQ-PF50) and child form (CHQ-CF87)

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The objective of this study was to evaluate the reliability and construct validity of the Chinese parent form (PF50) and child form (CF87) of the Child Health Questionnaire (CHQ). Methods: To assess the construct validity and reliability of the Chinese versions, we invited 1099 parents of healthy children and 816 school children to complete the Chinese CHQ-PF50 and CHQ-CF87, respectively. Results: Psychometric analysis on item convergent validity and discriminant validity showed ≥99% rates of success for all 10 scales in the CF87 and ≥94% for all but one scale in the PF50, the exception being general health scale (86%). We observed minimal floor effects for both questionnaires, but substantial ceiling effects for five scales in both the PF50 and CF87 (physical functioning, role-emotional/behavioral, role-physical, bodily pain and family activities). A substantially lower ceiling effect was observed for the physical scale and bodily pain in the CF87 (19% and 25%, respectively) relative to the PF50 (46% and 42%, respectively). The median alpha coefficient for CF87 and PF50 was 0.90 (range, 0.80–0.94) and 0.78 (range, 0.44–0.88), respectively. Conclusions:Our findings suggest that the Chinese CHQ-PF50 and CHQ-CF87 are robust and sufficiently reliable for group comparisons and perhaps also for use in other Chinese populations.