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Table 1 Descriptive statistics of the PTPN22 sample investigated

From: Comparison of the power of haplotype-based versus single- and multilocus association methods for gene × environment (gene × sex) interactions and application to gene × smoking and gene × sex interactions in rheumatoid arthritis

  Sex Current smoking status  
  Male Female Non-smoker Smoker Unknown Total
Sample N % N % N % N % N % N
Control 41 12.2 295 87.8 118 35.1 52 15.5 166 49.4 336
Case 132 19.9 533 80.2 554 83.3 96 14.4 15 2.3 665