In accordance with the individual studies, age was thought of as a continuous variable and gender as a dichotomous variable. In case of clustered trials, a variable indicating the clustering (e.g. worksite or firm level) was composed. Alcohol intake was harmonized by expressing variables in items (e.g. glasses) of alcohol consumption per week, which was, for the sake of consistency throughout consequence measures, additionally reworked into z-scores. Smoking was harmonized into a dichotomous variable with end result categories ‘non-smoking’ (also together with ex-smokers) and ‘smoking’. CDC is not responsible for Section 508 compliance on different federal or private website.
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