Table 1.

Selected characteristics of study subjects according to H. pylori infection status

TotalH. pylori negativeH. pylori positive
(n = 747)(n = 192)(n = 555)Pa
Age, median (IQR)50.0 (45.0–55.0)52.0 (47.0–56.0)49.0 (44.0–54.0)0.001b
Gender (%)0.1c
 Female331 (44.3)76 (39.6)255 (45.9)
 Male416 (55.7)116 (60.4)300 (54.1)
Smoking (%)0.04c
 No404 (54.1)91 (47.4)313 (56.4)
 Yes337 (45.1)98 (51.0)239 (43.1)
 Missing6 (0.8)3 (1.6)3 (0.5)
Drinking (%)<0.001c
 No432 (57.8)87 (45.3)345 (62.2)
 Yes267 (35.7)85 (44.3)182 (32.8)
 Missing48 (6.5)20 (10.4)28 (5.0)
Baseline pathology (%)<0.001c
 SG181 (24.2)75 (39.1)106 (19.1)
 CAG175 (23.4)45 (23.4)130 (23.4)
 IM169 (22.6)38 (19.8)131 (23.6)
 Ind DYS/DYS222 (29.7)34 (17.7)188 (33.9)
  • Abbreviation: IQR, interquartile range.

  • aP value for each covariate was estimated among participants without missing value on that covariate.

  • bTwo-Sample Kolmogorov–Smirnov test.

  • cPearson χ2 test without missing value.