Development and validation of a Chinese Drinking Expectancies Questionnaire for young adults: A Hong Kong study.

INTRODUCTION

Drinking expectancies, the perceived consequences of alcohol consumption, are noted to predict drinking behaviours. However, there is comparatively little research of drinking expectancies in non-Western populations. This study aimed to develop and validate a Chinese Drinking Expectancy Questionnaire (CDEQ-Adult) for Chinese young adults.

METHODS

Face and content validity were first assessed of items generated from literature review and previously conducted focus groups. Exploratory (EFA) and confirmatory factor analyses (CFA) were conducted with split-half samples from a random telephone survey that was conducted on Hong Kong Chinese adults between the ages of 18-34 (n = 675). The instrument's convergent validity and internal reliability were also examined.

RESULTS

The preliminary instrument items showed good content validity (Item Content Validity Index range: 0.8-1.0). The EFA yielded a 31-item, five-factor model consisting of five domains: Negative Consequences, Interpersonal Benefits, Increased Confidence, Health Benefits and Tension/Stress Reduction (variance explained 63.7%). The CFA revealed that the fit indices for the five-factor model using diagonal weighted least squares estimator were χ (256, N = 338) = 394.04, p < 0.001, comparative fit index 0.97, SRMR 0.07, RMSEA 0.06 (95% confidence interval 0.06, 0.08), suggesting a good fit of the model. The Cronbach's α coefficients were 0.94, 0.90, 0.86, 0.77 and 0.57, respectively for each of the five domains (n = 675). Significant associations with past month drinking behaviours and future drinking intentions give strong support for convergent validity.

DISCUSSION AND CONCLUSIONS

The CDEQ-Adult is a culturally relevant instrument for assessing drinking expectancies in Chinese young adults for use in future studies.