Table 1: Relationships between prevalence of H. pylori infection and general information.

FactorsNo. of subjects in Hp positive groupNo. of subjects in Hp negative groupTotal no. of subjects PrevalenceOR (95% CI)P value

Sex
 Male1446896234261.74%1.00 1.000
 Female19891086307564.68%0.97 (0.87–1.08)0.573
Age
 30–392672729490.82%1.00 1.000
 40–491508818232664.83%0.19 (0.13–0.28)0.000
 50–591374921229559.87%0.16 (0.11–0.24)0.000
 60–6928521550057.00%0.14 (0.09–0.22)0.000
BMI
 Underweight673410166.34%1.00 1.000
 Normal21781319349762.28%0.87 (0.58–1.32)0.516
 Obese1190629181965.42% 1.02 (0.67–1.55)0.943
Marriage
 Unmarried1652176.19%1.97 (0.73–5.35) 0.183
 Married33261930525663.28%1.00 1.000
 Divorced27184560.00%0.79 (0.44–1.44)0.446
 Loss of spouse66299569.47%1.32 (0.85–1.05)0.217
Education level
 Illiterate893812770.08%1.38 (0.94–2.04)0.100
 Primary school18241085290962.70%1.00 1.000
 Middle school1333746207964.12%1.05 (0.94–1.18)0.371
 University or above18911330262.58%0.94 (0.74–1.20)0.617
Number of family members
 136165269.23%1.00 1.000
 223715138861.08%0.70 (0.37–1.30)0.257
 31000602160262.42%0.74 (0.41–1.34)0.320
 449128077163.68%0.78 (0.42–1.43)0.421
 51466820228664.13%0.79 (0.44–1.44)0.449
 61528323564.68%0.81 (0.43–1.55)0.533
 7 and above53308363.86%0.69 (0.25–1.92)0.48
Annual income
 ≤50001044114571.72% 1.00 1.000
 5001–2000054936791659.93%0.81 (0.55–1.16)0.249
 20001–5000022351248348364.17%0.86 (0.61–1.23)0.418
 50001–8000045025870863.56%0.89 (0.61–1.30)0.546
 >80000976816558.79%0.78 (0.49–1.24)0.299