Supplementary Material for the article: Age, period, and cohort effects in synthetic cannabinoid use US adolescents, 2011-2015 Katherine M. Keyes1,2 Caroline Rutherford1 Ava Hamilton1 Joseph J. Palamar3 1 Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA 2 Department of Psychiatry, Columbia University Medical Center, New York, New York, USA 3 Department of Population Health, New York University Langone Medical Center, New York, New York, USA Corresponding author: Katherine M. Keyes Associate Professor of Epidemiology Columbia University Department of Epidemiology Mailman School of Public Health 722 West 168th Street, Suite 503 New York, NY 10032 Tel: (212) 304-5652 Email: This material supplements, but does not replace, the peer-reviewed article in Drug and Alcohol Dependence. Supplementary Figure 1. Supplementary Figure 1. Prevalence of past year synthetic cannabinoid use among adolescents in the US aged 13 to 19, including 12th grade Form 3 answers versus including 12th grade Form 6 responses, 2011 to 2015. Footnote: The students were randomized to questionnaires, some of which included questions regarding synthetic cannabinoid use. For 12th graders, the synthetic cannabinoid questions appeared on Forms 3 and 6. In order to elucidate any differences in responses by varying question placement on separate forms, we created two comparable samples—one including 12th grade respondents who had been given Form 3, and the other with 12th grade respondents who had been given Form 6. 8th and 10th grade students were queried about synthetic cannabinoid use on Forms 1 and 6 in 2011, and Form 1 from 2012-2015.
Supplementary Material for the article: Age, period, and cohort effects in synthetic cannabinoid use US adolescents, 2011-2015 Katherine M. Keyes1,2 Caroline Rutherford1 Ava Hamilton1 Joseph J. Palamar3 1 Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, USA 2 Department of Psychiatry, Columbia University Medical Center, New York, New York, USA 3 Department of Population Health, New York University Langone Medical Center, New York, New York, USA Corresponding author: Katherine M. Keyes Associate Professor of Epidemiology Columbia University Department of Epidemiology Mailman School of Public Health 722 West 168th Street, Suite 503 New York, NY 10032 Tel: (212) 304-5652 Email: This material supplements, but does not replace, the peer-reviewed article in Drug and Alcohol Dependence. Supplementary Figure 1. Supplementary Figure 1. Prevalence of past year synthetic cannabinoid use among adolescents in the US aged 13 to 19, including 12th grade Form 3 answers versus including 12th grade Form 6 responses, 2011 to 2015. Footnote: The students were randomized to questionnaires, some of which included questions regarding synthetic cannabinoid use. For 12th graders, the synthetic cannabinoid questions appeared on Forms 3 and 6. In order to elucidate any differences in responses by varying question placement on separate forms, we created two comparable samples—one including 12th grade respondents who had been given Form 3, and the other with 12th grade respondents who had been given Form 6. 8th and 10th grade students were queried about synthetic cannabinoid use on Forms 1 and 6 in 2011, and Form 1 from 2012-2015.
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