Table 2: Comparison of a priori primary outcome CATSYS measures.

Control ( 𝑁 = 3 7 )Non-FXTAS ( 𝑁 = 9 0 )FXTAS ( 𝑁 = 2 3 )
CATSYS groupCATSYS performance
task
MeanSDMeanSDMeanSDFXTAS versus controlNon-FXTAS versus controlFXTAS versus non-FXTAS

Postural Tremor, Tremor intensity (m/sec2)Hand:
 Dominant0.110.040.100.050.691.42***nsa***
 Nondominant0.100.040.090.040.982.51***ns***

Intention Tremor, Tremor intensity (m/sec2)Hand:
 Dominant2.241.472.141.312.332.50nsnsns
 Nondominant2.091.072.201.102.542.21nsns ns

Postural sway area (mm2)60 Sec:
 Eyes open7.944.2911.219.9941.9535.04***0.0756***
30 Sec:
 Eyes open5.173.247.979.7825.4122.25***ns***
 Eyes closed8.866.5714.4213.3348.3246.59***0.0295***
10 Sec:
 Eyes closed5.773.6111.0016.2746.8155.49***ns***

Analysis based on logarithm transformed data and adjusted for age.
aNot significant ( 𝑃 > . 1 0 ).
*** 𝑃 < . 0 0 0 1 (significant after P value adjustment for multiple testing).