[Reliability and validity of Health Scale of Traditional Chinese Medicine].
OBJECTIVE
To test the reliability and validity of Health Scale of Traditional Chinese Medicine (HSTCM) by means of questionnaires.


METHODS
A cross-sectional survey was conducted at Liwan Community of Guangzhou, Old People's Home in Guangzhou and Outpatient Department of the Second Affiliated Hospital of Guangzhou University of Chinese Medicine. A total of 652 Chinese individuals (over 18 years old) were assessed with the 88-item version of HSTCM and World Health Organization Quality of Life Measure-Abbreviated Version (WHOQOL-BREF), which were randomly delivered to them. Some socioeconomic characteristics were registered.


RESULTS
A test-retest reliability (15-day interval) was found among the 76 persons who completed the questionnaires by themselves. Intra-class correlation coefficient (ICC) was 0.93. Associated 95% confidence interval (CI) was 0.89-0.96. Split-half reliability was 0.79. Inter-investigator reliability (0.93) was also good, and the ICC of HSTCM was 0.90 (95%CI 0.67-0.97). The correlation between HSTCM and WHOQOL-BREF was -0.66. The correlations of HSTCM and questionnaire deliver order, investigator, interview date and interview time were 0.06, -0.12, -0.17 and 0.20 respectively. The correlation between HSTCM and self-rated health (0.46) was greater than that between HSTCM and chronic illness (0.28). Divided by individuals with or without chronic illness, area under the ROC (receiver operator characteristic) curve for HSTCM was 0.67 (95%CI 0.63-0.71).


CONCLUSIONS
It indicates that the HSTCM is conceptually valid with satisfactory psychometric properties and forms a basis for further applications in clinical research of traditional or integrative medicine.
Wu
Da-rong
DR
Applied Clinical Epidemiology Research Unit, the Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province 510120, China.
Lai
Shi-long
SL
Guo
Xin-feng
XF
Wen
Ze-huai
ZH
Liang
Wei-xiong
WX
D000293:Adolescent; D000328:Adult; D002681:China; D003430:Cross-Sectional Studies; D005240:Feasibility Studies; D005260:Female; D006304:Health Status; D006306:Health Surveys; D006801:Humans; D008297:Male; D008516:Medicine, Chinese Traditional; D008875:Middle Aged; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014944:World Health Organization; D055815:Young Adult