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Table 1 Descriptive statistics of age and sex

From: Low penetrance in facioscapulohumeral muscular dystrophy type 1 with large pathological D4Z4 alleles: a cross-sectional multicenter study

  ICs n (%) Affected carriers n (%) Unaffected carriers n (%) Non carriers n (%) P value
  65 34 25 60  
Gender      0.002
Male 44 (68%)a,b 18 (53%) 7 (28%)a 24 (40,%)b  
Female 21 (32%) 16 (47%) 18 (72%) 36 (60%)  
Age, years (mean ± standard deviation) 51.2 ± 14.9 50.5 ± 17.4 47.6 ± 19.5 46.9 ± 17.4 0.482
  1. Overall age comparison: Kruskall–Wallis test p = 0.482. Overall gender comparison: chi square test p = 0.002. Significant pairwise comparisons: aICs versus unaffected carriers p = 0.0007 and bICs versus non carriers p = 0.001.