Table 1.

Relationships between prevalence of H. pylori infection and general information.

Factors	No. of subjects in Hp positive group	No. of subjects in Hp negative group	Total no. of subjects	Prevalence	OR (95% CI)	P value
Sex
Male	1446	896	2342	61.74%	1.00	1.000
Female	1989	1086	3075	64.68%	0.97 (0.87–1.08)	0.573
Age
30–39	267	27	294	90.82%	1.00	1.000
40–49	1508	818	2326	64.83%	0.19 (0.13–0.28)	0.000
50–59	1374	921	2295	59.87%	0.16 (0.11–0.24)	0.000
60–69	285	215	500	57.00%	0.14 (0.09–0.22)	0.000
BMI
Underweight	67	34	101	66.34%	1.00	1.000
Normal	2178	1319	3497	62.28%	0.87 (0.58–1.32)	0.516
Obese	1190	629	1819	65.42%	1.02 (0.67–1.55)	0.943
Marriage
Unmarried	16	5	21	76.19%	1.97 (0.73–5.35)	0.183
Married	3326	1930	5256	63.28%	1.00	1.000
Divorced	27	18	45	60.00%	0.79 (0.44–1.44)	0.446
Loss of spouse	66	29	95	69.47%	1.32 (0.85–1.05)	0.217
Education level
Illiterate	89	38	127	70.08%	1.38 (0.94–2.04)	0.100
Primary school	1824	1085	2909	62.70%	1.00	1.000
Middle school	1333	746	2079	64.12%	1.05 (0.94–1.18)	0.371
University or above	189	113	302	62.58%	0.94 (0.74–1.20)	0.617
Number of family members
1	36	16	52	69.23%	1.00	1.000
2	237	151	388	61.08%	0.70 (0.37–1.30)	0.257
3	1000	602	1602	62.42%	0.74 (0.41–1.34)	0.320
4	491	280	771	63.68%	0.78 (0.42–1.43)	0.421
5	1466	820	2286	64.13%	0.79 (0.44–1.44)	0.449
6	152	83	235	64.68%	0.81 (0.43–1.55)	0.533
7 and above	53	30	83	63.86%	0.69 (0.25–1.92)	0.48
Annual income
≤5000	104	41	145	71.72%	1.00	1.000
5001–20000	549	367	916	59.93%	0.81 (0.55–1.16)	0.249
20001–50000	2235	1248	3483	64.17%	0.86 (0.61–1.23)	0.418
50001–80000	450	258	708	63.56%	0.89 (0.61–1.30)	0.546
>80000	97	68	165	58.79%	0.78 (0.49–1.24)	0.299