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Forsch Komplementmed. 2009 Feb;16(1):20-7. doi: 10.1159/000197770. Epub 2009 Feb 17.

BCQ+: a body constitution questionnaire to assess Yang-Xu. Part II: Evaluation of reliability and validity.

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  • 1Graduate Institute of Chinese Medical Science, China Medical University, No. 91 Hsueh-Shih Road, Taichung, Taiwan.

Abstract

INTRODUCTION:

Integrated medicine has become an important issue in this century. In order to bridge the gap between traditional Chinese medicine (TCM) and modern medicine, we have established a first final version of a Yang-Xu constitution questionnaire, the BCQ+, in a previous study. The objective of the present investigation is to assess the reliability and validity of the BCQ+.

PARTICIPANTS AND METHODS:

A total of 1,310 eligible participants, aged between 20-60, no disease onset in the past month, who received health examination in teaching hospitals were recruited. The BCQ+ was developed and psychometrically evaluated to ascertain and validate the factor structure of the BCQ+. Furthermore, the reliability and validity of the BCQ+ were examined.

RESULTS:

19 items from the BCQ+ were developed. Exploratory factor analysis identified 5 primary domains that represent the Yang-Xu constitution and correspond to the diminishing energy levels of 5 different body areas: head, chest, limbs, abdominal cavity, and body surface. Cronbach's alpha ranged between 0.55-0.88 and the intraclass correlation coefficients were >0.7 for most of the 19 questions. The diagnoses of Yang-Xu by the BCQ+ and an experienced TCM doctor were consistent. Systolic blood pressure (SBP) was used as an indicator of concurrent validity of the BCQ+, and it was found that higher Yang-Xu scores were associated with a lower SBP.

CONCLUSIONS:

Five domains with 19 items in the BCQ+ were developed. The BCQ+ is a valid and potentially useful tool for evaluating the Yang-Xu constitution in clinical practice and research.

Copyright (c) 2009 S. Karger AG, Basel.

PMID:
19295226
[PubMed - indexed for MEDLINE]
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