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. Author manuscript; available in PMC: 2017 Jul 1.
Published in final edited form as: Am J Prev Med. 2016 Mar 30;51(1):33–45. doi: 10.1016/j.amepre.2016.01.029

Figure 1. Cumulative prevalence of substance use among youth with chronic medical conditions (YCMC) and their healthy peers.

Figure 1

Stacked bar charts show the unadjusted cumulative prevalence of alcohol, tobacco, and marijuana use by age and chronic condition status. Panels depict the unadjusted cumulative prevalence of lifetime use (lighter, taller bars) and heavier/regular/recent use (darker, shorter bars) by age for YCMC and their healthy peers; these estimates and p-values for the comparison between YCMC and their healthy peers are also described in the tables below the charts. (Appendix 3 shows initiation and period prevalence estimates)