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. Author manuscript; available in PMC: 2014 Jan 7.
Published in final edited form as: Stat Methods Med Res. 2012 May 24;25(1):205–220. doi: 10.1177/0962280212448721

Figure 1.

Figure 1

Longitudinal FVC in the placebo and CYC groups during the first 12 months. In the Scleroderma lung study, the forced vital capacity (FVC, expressed as a percentage of the predicted value) is measured at baseline and at three-month intervals throughout the study. In this figure, two subjects (01-ALS-013 and 04-JWW-010) in the placebo group are highlighted as examples of study dropouts at 6 and 9 months, and two subjects (08-S-L-018 and 09-NEP-005) in the CYC group are examples of missed visits at 6 and 9 months.