Table 1.

Study populations

VariablesHealthy young individualsControl without gastric cancerGastric cancer training setGastric cancer validation set
N52677291
Age (mean ± SEM)a23.2 ± 0.357.4 ± 1.562.3 ± 1.171.3 ± 0.93
Maleb26 (50%)41 (61.2%)46 (63.9%)67 (73.6%)
  • aControl without gastric cancer versus gastric cancer training set, P = 0.01, Control without gastric cancer versus gastric cancer validation set, P < 0.0001.

  • bHealthy young individuals versus gastric cancer validation set, P = 0.006.