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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: Soc Sci Med. 2014 Nov 18;124:132–141. doi: 10.1016/j.socscimed.2014.11.035

Figure 1.

Figure 1

Descriptive proportions and means for alcohol use outcomes by race and gender in the National Longitudinal Study of Adolescent Health

*Mean ages based on four waves of data collection. Wave 1 (mean age: 16.03); Wave 2 (mean age: 15.99); Wave 3 (mean age: 21.85); Wave 4 (mean age: 29.00). Wave 1 and Wave 2 were separated by one year, however the mean age of the Wave 2 sample is slightly lower than the mean age of the Wave 1 sample (Wave 1: 16.03; Wave 2: 15.99). Respondents that were no longer in high school at the Wave 2 interview, however, remained eligible for the Wave 3 and 4 interviews and were re-contacted. We display them on the graph as one year apart given the time difference in data collection.