... skewed, gaussian or 'normal' distribution. The mean was 23.4 units of alcohol per week and the median was 20 units of alcohol per week. In other words, while half the sample drink 20 units of alcohol or less per week, half of the students in the sample drink more than 20 units of alcohol per week. The range was from 0 units of alcohol per week, (with approximately five percent of students recording that they were non-drinkers) to 100 units of alcohol per week. There were just 4 students (1.8% of the sample) who recorded that they drunk as much as 100 units per week. The questionnaire also asked students whether they currently smoke. A total of 31.7 students answered this question positively, corresponding to 70 students out of a total sample of 221 students. In other words approximately a third of students currently smoke. Before examining the possible association between smoking ...

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