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Table 3 Frequencies of MJD in SCA patients from various countries

From: High frequency of Machado-Joseph disease identified in Southeastern Chinese kindreds with spinocerebellar ataxia

Countries Number of MJD Number of SCA Frequency (%) Reference
Portugal 32 38 84.2 16
Brazil 96 114 84.2 17
Present study 100 138 72.5  
Portugal/Brazil 67 106 63.2 44
Germany 32 77 41.6 45
France 25 87 28.7 46
Holland 64 227 28.2 47
America* 31 149 20.8 48
Spain 11 72 15.3 49
Australia 11 88 12.5 13
Mexico 13 108 12.0 50
South Africa 2 54 3.7 51
Italy 2 183 1.1 52
UK 0 22 0 53
Serbia 0 38 0 54
Finland 0 49 0 55
Norway 0 19 0 56
Czech 0 118# 0 11
Combined 486 1687 28.8  
  1. *The patient subjects mixed with African American, Caucasian American, Cambodian, Japanese, Pakistani, Lebanese and Peruvian; # composed of patients with dominant SCA and sporadic ataxia