Table 2 Patient characteristics and P values of univariate analysis

Gender

0.18

 Male

168 (51.85%)

203 (57.02%)

 Female

156 (48.15%)

153 (42.98%)

Age (years)

38.05 ± 11.86

42.44 ± 12.84

< 0.0001

BMI (kg/m²)

22.27 ± 2.57

22.73 ± 2.52

0.02

Smoking

< 0.0001

 No

229 (70.68%)

182 (51.12%)

 Yes

95 (29.32%)

174 (48.88%)

Alcohol consumption

< 0.0001

 No

281 (86.73%)

236 (66.29%)

 Yes

43 (13.27)

120 (33.71%)

Family history of gastric cancer

< 0.0001

 No

319 (98.46%)

314 (88.20%)

 Yes

5 (1.54%)

42 (11.8%)

Multi-person households

0.79

 No

15 (4.63%)

15 (4.21%)

 Yes

309 (95.37%)

341 (95.79%)

Living with an HP-positive individual

 No

196 (60.49%)

28 (7.86%)

 Yes

17 (5.25%)

210 (58.99%)

< 0.0001

 Unknown

111 (34.26%)

118 (33.15%)

0.76

Using serving chopsticks

< 0.0001

 No

197 (60.80%)

323 (90.73%)

 Yes

127 (39.20%)

33 (9.27%)

Tea drinking

0.00

 No

77 (23.77%)

51 (14.33%)

 Yes

247 (76.23%)

305 (85.67%)

Number of years

 0 year

75 (23.15%)

51 (14.33%)

 0–5 years

43 (13.27%)

37 (10.39%)

0.24

 ≥ 5 years

206 (63.58%)

268 (75.28%)

0.00

Number of days per week

 0 day

76 (23.45%)

53 (14.88%)

 0–3 days

17 (5.25%)

17 (4.78%)

0.78

 4–6 days

16 (4.94%)

11 (3.09%)

0.22

 7 days

215 (66.36%)

275 (77.25%)

0.00

Number of times per day

 0 times

75 (23.15%)

51 (14.33%)

 0–3 times

142 (43.83%)

156 (43.82%)

0.99

 > 3 times

107 (33.02%)

149 (41.85%)

0.02

Sharing cup

0.00

 No

143 (44.13%)

107 (30.06%)

 Yes

181 (55.87%)

249 (69.94%)

Hot tea

< 0.0001

 No

231 (71.30%)

189 (53.09%)

 Yes

93 (28.70%)

167 (46.91%)

Infection in co-drinkers

 No

98 (30.25%)

63 (17.70%)

 Yes

8 (2.47%)

5 (1.40%)

0.32

 Unknown

218 (67.28%)

288 (80.90%)

< 0.0001