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Profile of drinking behaviour and comparison of self-report with the CAGE questionnaire and carbohydrate-deficient transferrin in a rural Lesotho community.

This paper aims to: (1) profile the drinking behaviour of a rural Lesotho community facing relocation; (2) compare the following measures of hazardous drinking in this community: quantity/frequency self-report, the CAGE questionnaire and carbohydrate-deficient transferrin (CDT) levels; (3) describe community awareness of, and attitude towards, treatment services. As part of a larger baseline survey of community health status, households in 29 villages in Lesotho were randomly sampled. Consenting adults (n = 348) participated in a face-to-face interview about alcohol use, which included the CAGE. Blood was taken from participants for CDT determination. Fifty-three per cent of men (37/69) and 19% of women (53/279) reported drinking alcohol. Thirty-six per cent of men (25/69) and 9% of women (25/279) were classified as hazardous drinkers defined as drinking 350 g (males) or 225 g (females) of alcohol/week, or 'engaged in bouts of heavy drinking 1 to 2 days a month or more during the past 12 months'. Hazardous drinkers were significantly more likely to be male and older, but did not differ from the rest of the sample on marital status. Using hazardous drinking as the standard, CAGE (score > or = 2) had a positive predictive value (PPV) of 75% for men and 62% for women. The parameters for CDT must be interpreted with caution as the cut-offs for hazardous drinking, especially for women's drinking, were lower than the usual cut-offs in published CDT studies. However, the high specificities for CDT in men (100%; 19/19) and in women (77%; 110/142) are consistent with other studies, but the low PPV of 14% (5/37) for men and women combined suggests that CDT is not effective as a predictor of hazardous drinking in this population. There was high awareness of available treatment services among participants, and most believed treatment to be beneficial. Overall, the study provides a comprehensive baseline profile of drinking behaviour in this community, but did not show the CAGE questionnaire or CDT profile to be useful in in this community.