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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Mov Disord. 2013 Jan 21;28(3):380–383. doi: 10.1002/mds.25319

Figure 2. Kaplan-Meier curves for time to dyskinesia stratified by tertile of prior caffeine use.

Figure 2

Total number at risk in each tertile is shown at the bottom of the graph. Dashed line: > 206 mg/day of caffeine; solid line: 67.5–206 mg/day of caffeine; dotted line: < 67.5 mg/day of caffeine (log-rank test, p=0.19).