Estimated alcohol consumption in the 1995 National Health Survey: some methodological issues.
OBJECTIVE
This paper critically examines the methodology used to ascertain alcohol consumption in the 1995 Australian Bureau of Statistics National Health Survey (NHS).


METHODS
The 1995 NHS was the second in a series of regular, five-yearly population surveys designed to obtain national benchmark information on a range of health-related issues and enable the monitoring of trends over time. The first survey was conducted in 1989-90. In the 1995 NHS, respondents were asked about the quantity of each of seven types of alcohol consumed on up to three days of the week before the interview day. In the 1989-90 NHS, however, respondents were asked about alcohol consumption on each of the seven days before the interview. This paper uses Unit Record Data from the 1989-90 National Health Survey to investigate the methodology used in 1995.


RESULTS
It is shown that the estimates of alcohol consumption obtained using the 1995 methodology are highly dependent on the day of the week on which the interviews were conducted.


CONCLUSIONS
It is recommended that the 1995 methodology not be used in future NHS surveys. The 1989-90 methodology of seven-day retrospective diaries would seem a better choice for future National Health Surveys.
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000428:Alcohol Drinking / Q000453:epidemiology*; D001315:Australia / Q000453:epidemiology; D004812:Epidemiologic Methods; D005260:Female; D006306:Health Surveys; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012042:Registries; D012307:Risk Factors; D012680:Sensitivity and Specificity; D017678:Sex Distribution; D014739:Victoria / Q000453:epidemiology