Table 2.
Each serum levels between the patients with and without Kita–Kyushu lung cancer antigen-1 expression (mean ± SE)
| Total (n = 77) | KK-LC-1 positive (n = 63) | KK-LC-1 negative (n = 14) | P value (Welsh’ test) | |
| Anti-H. pylori IgG titer (U/mL) | 57.07 ± 10.47 | 61.76 ± 4.46 | 35.94 ± 9.47 | 0.0289 |
| PG I (ng/mL) | 16.98 ± 5.03 | 16.88 ± 2.14 | 17.39 ± 4.55 | 0.9226 |
| PG II (ng/mL) | 21.01 ± 8.54 | 23.60 ± 3.64 | 9.34 ± 7.72 | 0.0041 |
| PG I/II ratio1 (n = 73) | 1.61 ± 0.50 | 1.38 ± 0.19 | 2.86 ± 0.46 | 0.087 |
1
Four subjects, which levels of PGI were null, were eliminated from PG I/II ratio. KK-LC-1: Kita–Kyushu lung cancer antigen-1; H. pylori: Helicobacter pylori.