Table 1 The baseline characteristics and HP infection status, serum PG test of gastric cancer and controls
|  | Gastric cancer (n = 72) | CAG (n = 61) | CNAG (n = 27) | Healthy control (n = 37) |
|---|---|---|---|---|
Age(years, mean ± SD) | 61.7±1.4ζ | 56.7±1.4 | 48.1±2.8 | 56.7±2.8 |
Male/Female ratio | 1.23 | 0.91 | 0.5 | 1.31 |
Histological type | Â | Â | Â | Â |
  Intestinal type | 25(34.7%) |  |  |  |
  Diffuse type | 47(65.3%) |  |  |  |
TNM stage | Â | Â | Â | Â |
  Early gastric cancer | 16(22.2%) |  |  |  |
  Advanced gastric cancer | 56(77.8%) |  |  |  |
HP infection status | Â | Â | Â | Â |
  HP positive | 48(66.7%) | 30(49.2%) | 14(51.8%) | 18(48%) |
PG test | Â | Â | Â | Â |
  PG I (ng/ml) | 76.91±4.78* | 72.02±5.48 | 79.64±5.74 | 84.52±4.44 |
  PG II (ng/ml) | 25.10±2.35** | 19.44±1.27 | 18.27±1.93 | 14.39±1.12 |
  PG I/II ratio | 3.91±0.29ξ | 3.99±0.24 | 5.84±0.72 | 7.18±0.69 |