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Table 1: 
Clinical features of patients with SCA1 and SCA2
FeaturesSCA1 (n = 14)SCA2 (n = 11)
CAG repeats (range)40–5835–47
Age at onset (years)40.3 ± 1035.9 ± 10
Disease duration (years)8.2 ± 4.97.4 ± 4.4
Dysarthria (%)10087
Nystagmus (%)210
Vertical gaze palsy (%)4373
Horizontal gaze palsy (%)1433
Slow saccades (%)3687
Increased bicep reflexes (%)9320
Increased patellar reflexes (%)10020
Lower limb spasticity (%)7113
Babinski sign (%)7960
Decreased vibration sense (%)8387
Dysphagia (%)5080
Amyotrophy (%)70
Cognitive impairment (%)713
Sphincteric disturbances (%)2947
  • Note:—CAG indicates cytosine adenine guanine.