Case Control Study
Copyright ©The Author(s) 2022.
World J Gastrointest Oncol. Sep 15, 2022; 14(9): 1689-1698
Published online Sep 15, 2022. doi: 10.4251/wjgo.v14.i9.1689
Table 3 Association between Helicobacter pylori infection and esophageal precancerous lesion risk dichotomized by gender, age, cigarette smoking, and alcohol drinking

Cases
Controls
Crude OR (95%CI)
P value
Adjusted OR (95%CI)1
P value
Malen = 100n = 100
H. pylori (-)78 (78.0%)72 (72.0%)1.00 (reference)-1.00 (reference)-
H. pylori (+)22 (22.0%)28 (28.0%)0.73 (0.38-2.38)0.3280.64 (0.32-1.27)0.200
Femalen = 100n = 100
H. pylori (-)75 (75.0%)70 (70.0%)1.00 (reference)-1.00 (reference)-
H. pylori (+)25 (25.0%)30 (30.0%)0.78 (0.42-1.45)0.4290.82 (0.42-1.58)0.548
Age < 65 yearsn = 107n = 107
H. pylori (-)76 (71.0%)73 (68.2%)1.00 (reference)-1.00 (reference)-
H. pylori (+)31 (29.0%)34 (31.8%)0.88 (0.49-1.57)0.6560.89 (0.47-1.67)0.708
Age ≥ 65 yearsn = 93n = 93
H. pylori (-)77 (82.8%)69 (74.2%)1.00 (reference)-1.00 (reference)-
H. pylori (+)16 (17.2%)24 (25.8%)0.60 (0.29-1.22)0.1560.59 (0.27-1.28)0.183
Cigarette smoking (-)n = 126n = 134
H. pylori (-)97 (77.0%)93 (69.4%)1.00 (reference)-1.00 (reference)-
H. pylori (+)29 (23.0%)41 (30.6%)0.68 (0.39-1.18)0.1700.74 (0.42-1.32)0.310
Cigarette smoking (+)n = 74n = 66
H. pylori (-)56 (75.7%)49 (74.2%)1.00 (reference)-1.00 (reference)-
H. pylori (+)18 (24.3%)17 (25.8%)0.93 (0.43-1.99)0.8450.80 (0.34-1.86)0.601
Alcohol drinking (-)n = 147n = 151
H. pylori (-)109 (74.1%)109 (72.2%)1.00 (reference)-1.00 (reference)-
H. pylori (+)38 (25.9%)42 (27.8%)0.91 (0.54-1.51)0.7020.94 (0.55-1.61)0.831
Alcohol drinking (+)n = 53n = 49
H. pylori (-)44 (83.0%)33 (67.3%)1.00 (reference)-1.00 (reference)-
H. pylori (+)9 (17.0%)16 (32.7%)0.42 (0.17-1.07)0.0700.32 (0.11-0.95)0.040