Table 2  The association of TB susceptibility and polymorphism of four SNPs in the promoter region of IL-22 in the second stage and two stages pooled studies in Chinese.
Stage  Sample counts  SNP id  MAF  Minor allele  OR  95% CI  P-value
   Cases  Controls     Cases  Controls        LCL  UCL   
II  431  310  rs2227472  0.464  0.526  A  0.778  0.621  0.974  0.0285
         rs2227478  0.148  0.189  C  0.746  0.564  0.988  0.0405
         rs2227483  0.458  0.534  A  0.739  0.573  0.955  0.0205
         rs2227485  0.467  0.523  C  0.798  0.641  0.993  0.0432
I+II (pooled)  479  358  rs2227472  0.465  0.522  A  0.796  0.646  0.981  0.0323
         rs2227478  0.148  0.191  C  0.769  0.592  0.957  0.0220
         rs2227483  0.46  0.528  T  0.762  0.604  0.962  0.0223
         rs2227485  0.466  0.517  C  0.816  0.665  1.000  0.0499