Cultural adaptation and psychometric properties of the Chinese Burden of Treatment Questionnaire (C-TBQ) in primary care patients with multi-morbidity

Family Practice
Weng Yee ChinCindy Lo Kuen Lam

Abstract

The Burden of Treatment Questionnaire (TBQ) assesses the impact of a patient's treatment workload on their quality of life. The aim was to translate and validate the TBQ on Chinese primary care patients with multi-morbidity. The English TBQ was translated and back-translated using professional translators. Cognitive debriefing interviews were performed on 15 patients. The resulting instrument was tested on 200 primary care patients with multi-morbidity (>1 chronic disease) to examine its psychometric performance including exploratory factor analysis, confirmatory factor analysis, internal consistency and reliability. The EuroQol Five-Dimension Five-Level Questionnaire (EQ-5D-5L), Short-Form Six-Dimension (SF-6D), WONCA COOP Charts and the Global Health Rating Scale were used to assess convergent and divergent validity. Median age of the respondents was 62 years (range 22-95 years) with a median of four conditions. The median TBQ total score was 16 (interquartile range 7.25-30). There was a significant floor effect (>15%) observed for all items. Spearman's correlations was >0.4 for all items demonstrating adequate internal construct validity. TBQ global score correlated with number of conditions (P = 0.034), EQ-5D-5L (P < 0.001)...Continue Reading

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