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Table 1 Summary of samples used in GWASs and replication studies

From: Discovery of a novel genetic susceptibility locus on X chromosome for systemic lupus erythematosus

  Cases Controls
Stage Sample size Mean (SD) age Mean (SD) age of onset Sex (female) Sample size Mean (SD) age Sex (female)
GWAS 1017 34.19 (11.47) 29.84 (10.96) 1017 539 34.31 (12.49) 539
Replication central 1156 35.19 (12.16) 30.70 (11.32) 1156 2330 29.34 (11.20) 2330
Replication southern 1012 33.01 (10.82) 28.22 (10.03) 1012 335 32.59 (13.21) 335
Replication northern 274 35.64 (12.02) 31.10 (11.79) 274 133 29.48 (15.59) 133
Total 3459 34.29 (11.60) 29.76 (10.94) 3459 3337 30.47 (11.98) 3337
  1. GWAS stage samples are from central China
  2. GWAS genome-wide association study, SD standard deviation