Alcohol and other drug use by Manitoba students

The number of students in each grade was noted, and the appropriate number of surveys with instructions for administration, were couriered to the general office of the school. [...] Specific details about the data collection process are included in Appendix A. In brief, the sample schools were sent explanatory letters, with instructions for the administration of the questionnaires, and enough copies for the students that were listed in the selected classrooms. [...] Table 2 shows the distribution of the schools and the proportion of the sample in various categories. [...] Thus instructions, both on the cover of the survey and those provided by the individual administering the survey, emphasized the confidential nature of the information, and that they would never be able to be identified from the information provided. [...] These results are summarized on Table 7. The percentages shown are the percentage of all of the students in the sample.