1. Janusz Sierosławski Institute of Psychiatry and Neurology Warsaw
This paper arises from the project Joint Action on Reducing Alcohol Related Harm (RARHA)
which has received funding from the EU, in the framework of the Public Health Program.
Estimating alcohol annual consumption on the basis of population survey
Janusz Sierosławski
Institute of Psychiatry and Neurology
Warsaw
Lisbon Addiction 2017
Second European Conference on Addictive Behaviors and Dependencies
Lisbon, Portugal, October, 2017

2. Introduction
Long tradition of measuring alcohol consumption by population survey
Problem of huge underestimation of alcohol consumption comparing to sales statistics (30-70% coverage)
Variety of methods – most commonly used Beverage Specific Quantity Frequency (BSQF) method
Respondents report usual volume consumed on one occasion rather than an average volume
I tak:
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3. SEAS – RARHA Survey
European Alcohol Survey conducted in 19 Countries in 2015 in the scope of RARHA Project (Joint Action on Alcohol)
Standardized methodology – common questionnaire
Representative random samples – on average 1500 respondents per country
In total above interviews were collected

4. Estimating overall annual alcohol consumption with RSOD adjustment
Assumption:
Annual volume of usual alcohol consumption is estimated based on BSQF
Annual volume of unusual binge consumption is estimated on the basis of RSOD
Annual alcohol consumption calculated on the basis of BSQF after capping unrealistic values
Adjustment applicable only for respondents with daily binge consumption lower than daily usual consumption

5. Adjustment of annual consumption
Estimation of annual alcohol consumption using BSQF
Questions on frequency of risky single occasion drinking (RSOD) in the past 12 months
40/60 grams of pure alcohol or more by one occasion (female/male)
80/120 grams of pure alcohol or more by one occasion (female/male)
Question on maximal number of alcohol on one occasion in the past 12 months

6. Calculating alcohol consumption on the basis of RSOD
RSOD consumption attributed to 40/60+ grams and 80/120+ grams estimated separately using formula frequency x quantity
RSOD 40/60+ grams
quantity: midpoint between 40/60 and 80/120 grams or if 80/120 grams not reported, between 40/60 and max number of grams
RSOD 80/120+ grams
quantity: midpoint between 80/120 grams and max number of grams
Summing up both parts of the estimation

7. Estimating overall annual alcohol consumption with RSOD adjustment
Calculating daily usual alcohol consumption dividing overall annual BSQF consumption by number of generic drinking days
Calculating daily binge consumption dividing overall annual BSQF consumption by number of binge drinking days
IF daily usual consumption lower than daily binge consumption, calculating adjustment by multiplying number of RSOD days per year by the difference be-tween binge (RSOD) consumption per binge drinking day and usual (BSQF) consumption per usual drinking day
IF daily usual consumption equal to or higher than daily binge consumption adjustment not applied

8. Adjustment of annual alcohol consumption (liters of 100% alcohol) estimated on the basis of BSQF by RSOD data

9. RSOD adjustment as a percent of BSQF estimate

10. Predictive value of estimates for prediction of alcohol problem
BSQF
Overall
Area
0.700
0.707
Std. Error
0.04
Sigif.
0.000
95% CI
Lower
0.692
0.708
Upper
0.715

11. Conclusions
Adjustment of annual alcohol consumption using the question on frequency of RSOD increases of estimate by 9% on average.
In some countries like Bulgaria and Iceland increase by about 21%, while in other ones like Hungary, Italy, Lithuania, by 2% only
Adjustment slightly increases predictive value of risk of alcohol related problems, but the difference is not significant
The results of efforts to improve alcohol consumption estimation through population survey are not satisfactory yet
I tak:
Pokażę Państwu wyniki dotyczące wymienionych tutaj cech
W uzasadnionych przypadkach wyniki zostaną przedstawione w podziale na typy placówek.
Nie ma zatem na co czekać i przejdźmy do rzeczy.