A Quantitative Assessment of Tremor and Ataxia in Female FMR1 Premutation Carriers Using CATSYS

Figure 1

(a) Distribution/boxplots of (log) sway area (mm²) for eyes open 30 sec. task. Sway area was significantly higher in patients with FXTAS, compared to controls (𝑃<.0001), as well as non-FXTAS (𝑃<.0001). (Note: results unaffected by an outlying observation.) (Interior box horizontal bar = median). (b) Distribution/boxplots of (log) postural tremor intensity (m/sec²) in dominant hand (similar results for nondominant hand). Postural tremor intensity was significantly higher in patients with FXTAS, compared to controls (𝑃<.0001), as well as non-FXTAS (𝑃<.0001). (Note: results unaffected by outlying observations.) (Interior box horizontal bar = median).

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