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. Author manuscript; available in PMC: 2016 May 17.
Published in final edited form as: Muscle Nerve. 2015 Feb 17;52(4):527–533. doi: 10.1002/mus.24562

Figure 1.

Figure 1

Age and disease duration associate with disability in patients with IBM. A functional index, calculated from 10 scores reporting ambulation and daily living activities, negatively associated with both the age of respondents and the number of years since diagnosis. The mean of the functional activity index was plotted against the age (years) of respondents (A) or disease duration (B) indicated by the number of years since the diagnosis of IBM. The size of the data points in each graph represents the relative number of respondents in each age group.