Abbreviations: BI = Barthel Index; CACNA1A = the alpha 1A P/Q type voltage-dependent calcium channel gene; CAG = cytosine-adenine-guanine; ICARS = International Cooperative Ataxia Rating Scale; IDR = Intractable Diseases Research; NS = not significant; SARA = Scale for the Assessment and Rating of Ataxia.
IDR-BI = total points of 6 items from the BI assessed by the IDR registry.
IDR-ICARS = total points of 5 items from the ICARS assessed by the IDR registry.
aData on the CAG repeat length were analyzed for 43 patients heterozygous for the expanded allele.
bP < .05 (statistical analysis conducted with the Pearson correlation test).
cP < .01 (statistical analysis conducted with the Pearson correlation test).