Variables | Shanghai (n = 3151) | Beijing (n = 3168) | Wuhan (n = 3283) | Xi'an (n = 3266) | Guangzhou (n = 3210) | Total (n = 16 078) |
---|---|---|---|---|---|---|
Age (years) | 47.7 ± 14.1 | 42.7 ± 15.3 | 41.5 ± 15.4 | 41.6 ± 15.2 | 39.0 ± 14.3 | 42.5 ± 15.2 |
Weight (kg) | 63.0 ± 11.4 | 65.1 ± 11.4 | 60.1 ± 10.1 | 60.8 ± 10.2 | 57.8 ± 9.9 | 61.3 ± 10.9 |
Height (cm) | 164.4 ± 8.1 | 165.8 ± 8.0 | 164.1 ± 7.6 | 165.3 ± 7.7 | 162.4 ± 8.1 | 164.4 ± 8.0 |
Body mass index (kg/m 2 ) | 23.2 ± 3.3 | 23.7 ± 3.5 | 22.3 ± 3.2 | 22.2 ± 3.2 | 21.9 ± 3.1 | 22.6 ± 3.3 |
Female sex | 1749 (55.5) | 1682 (53.1) | 1719 (52.4) | 1647 (50.4) | 1593 (49.6) | 8390 (52.2) |
Urban area | 1572 (49.9) | 1551 (49.0) | 1653 (50.4) | 1617 (49.5) | 1679 (52.3) | 8072 (50.2) |
Smoking | 926 (29.4) | 962 (30.4) | 899 (27.4) | 912 (27.9) | 732 (22.8) | 4431 (27.6) |
Alcohol use (≥ 4 times per month) | 628 (19.9) | 780 (24.6) | 791 (24.1) | 528 (16.2) | 535 (16.7) | 3262 (20.3) |
Family history of gastrointestinal disease | 487 (15.5) | 98 (3.1) | 396 (12.1) | 275 (8.4) | 171 (5.3) | 1427 (8.9) |
Married | 2693 (85.5) | 2421 (76.4) | 2597 (79.1) | 2583 (79.1) | 2288 (71.3) | 12 582 (78.3) |