Table 1 The basic demographic characteristics of the subjects

Sex

Male

301 (75.6)

300 (75.6)

0.984

Female

97 (24.4)

97 (24.4)

Age (mean ± SD)

58.22 ± 11.35

58.69 ± 10.50

0.549

≥60

187 (47.0)

193 (48.6)

0.646

< 60

211 (53.0)

204 (51.4)

BMI (kg/m²)

≥24.00

125 (31.4)

194 (48.9)

< 0.001*

< 24.00

273 (68.6)

203 (51.1)

Occupation

White Collar

148 (37.2)

41 (10.3)

< 0.001*

Blue Collar

250 (62.8)

356 (89.7)

Monthly income (RMB/Per capita)

≥1000

258 (64.8)

213 (53.7)

0.001*

< 1000

140 (35.2)

184 (46.3)

Family history of GC

Yes

56 (14.1)

10 (2.5)

< 0.001*

No

342 (85.9)

387 (97.5)