Table 1.
Characteristics of the cases and controls in the present study.
| Cases (n = 275) | Controls (n = 275) | P-value§ | |
|---|---|---|---|
| Sex | |||
| Men (%) | 142 (51.6) | 142 (51.6) | |
| Women (%) | 133 (48.4) | 133 (48.4) | |
| Age (years)† | 53.5 ± 10.5 | 53.6 ± 10.5 | |
| Smoking | |||
| Never | 127 (46.2) | 141 (51.3) | |
| Current or former | 142 (51.6) | 121 (44.0) | 0.128 |
| Unknown | 6 (2.2) | 13 (4.7) | |
| Alcohol intake | |||
| Never | 92 (33.5) | 74 (26.9) | |
| Current or former | 165 (60.0) | 165 (60.0) | 0.254 |
| Unknown | 18 (6.5) | 36 (13.1) | |
| Serum H. pylori antibody (EV)‡ | 7.10 (4.63–10.39) | 4.07 (1.56–6.54) | <0.001 |
| PG I (ng/mL)‡ | 49.60 (31.55–68.90) | 43.10 (32.55–55.60) | 0.016 |
| PG II (ng/mL)‡ | 19.10 (13.65–26.35) | 12.50 (7.13–19.50) | <0.001 |
| PG I/II (ng/mL)‡ | 2.54 (1.85–3.20) | 3.73 (2.24–5.66) | <0.001 |
†Mean ± standard deviation.
‡Median value and interquartile range.
§Chi-squared test (not included unknown categories) for categorical variables and Mann–Whitney U test for continuous variables.
H. pylori, Helicobacter pylori; EV, enzyme-linked immunosorbent assay value; PG, Pepsinogen.