Table 1∣.
Distribution of 3,900 cases of gastric cancer and 7,792 controls according to study center, sex, age and other selected covariates.
| Cases | Controls | |||
|---|---|---|---|---|
| N | % | N | % | |
| Total | 3,900 | 7,792 | ||
| Study center | ||||
| Europe | ||||
| Italy (Buiatti et al. 1989) | 1,016 | 26.1 | 1,159 | 14.9 |
| Greece (Lagiou et al. 2004) | 110 | 2.8 | 100 | 1.3 |
| Spain 1 (Castano-Vinyals et al. 2015) | 441 | 11.3 | 3,440 | 44.2 |
| Spain 2 (Santibanez et al. 2012) | 401 | 10.3 | 455 | 5.8 |
| Russia (Zaridze et al. 1999) | 450 | 11.5 | 611 | 7.8 |
| Asia | ||||
| China 1 (Mu et al. 2005) | 206 | 5.3 | 415 | 5.3 |
| China 2 (Setiawan et al. 2005) | 711 | 18.2 | 711 | 9.1 |
| Japan (Machida-Montani et al. 2004) | 153 | 3.9 | 303 | 4.0 |
| Americas | ||||
| Brazil 1 (Nishimoto et al. 2002) | 226 | 5.8 | 226 | 2.9 |
| Brazil 2 (Hamada et al. 2002) | 93 | 2.4 | 186 | 2.4 |
| Mexico (Lopez-Carillo et al. 2003) | 93 | 2.4 | 186 | 2.4 |
| Age, mean (SD) | 62.9 (10.9) | 62.0 (11.5) | ||
| Sex | ||||
| Men | 2,474 | 63.4 | 4,564 | 58.6 |
| Women | 1,426 | 36.6 | 3,228 | 41.4 |
| Socioeconomic status | ||||
| Low | 2,388 | 61.2 | 3,946 | 50.6 |
| Intermediate | 1,192 | 30.6 | 2,634 | 33.8 |
| High | 291 | 7.5 | 1,174 | 15.1 |
| Missing | 29 | 0.7 | 38 | 0.5 |
| Smoking status | ||||
| Never | 1,724 | 44.2 | 3,629 | 46.6 |
| Former | 979 | 25.1 | 2,176 | 27.9 |
| Current | 1,131 | 29.0 | 1,888 | 24.2 |
| Missing | 66 | 1.7 | 99 | 1.3 |
| BMI (kg/m2) 1 | ||||
| <24.9 | 1,695 | 43.5 | 3,243 | 41.6 |
| 25.0-29.9 | 873 | 22.4 | 2,336 | 30.0 |
| ≥ 30.0 | 920 | 23.6 | 1,615 | 20.7 |
| Missing | 412 | 10.6 | 598 | 7.7 |
| History of diabetes 2 | ||||
| No | 3,226 | 82.7 | 6,290 | 80.7 |
| Yes | 256 | 6.6 | 776 | 10.0 |
| Missing | 418 | 10.7 | 726 | 9.3 |
| Alcohol intake 3 | ||||
| Never | 915 | 23.4 | 1,780 | 22.8 |
| Low (≤12 g/d) | 530 | 13.6 | 2,028 | 26.0 |
| Intermediate (>12–47 g/d) | 1,178 | 30.2 | 1,979 | 25.4 |
| High (> 47 g/d) | 408 | 10.5 | 581 | 7.5 |
| Missing | 869 | 22.3 | 1,424 | 18.3 |
| Mushroom intake | ||||
| No | 1,609 | 41.3 | 2,836 | 36.4 |
| Yes | 2,093 | 53.7 | 4,374 | 56.1 |
| Missing | 198 | 5.1 | 582 | 7.5 |
| Vegetables/legumes intake 4 | ||||
| Low | 1,106 | 28.3 | 1,961 | 25.2 |
| Intermediate | 1,098 | 28.2 | 2,304 | 29.6 |
| High | 1,469 | 37.7 | 2,624 | 33.7 |
| Missing | 227 | 5.8 | 903 | 11.6 |
| Fruit intake 5 | ||||
| Low | 1,247 | 32.0 | 2,097 | 26.9 |
| Intermediate | 1,143 | 29.3 | 2,275 | 29.2 |
| High | 1,229 | 31.5 | 2,616 | 33.6 |
| Missing | 281 | 7.2 | 804 | 10.3 |
| Total energy intake 6 | ||||
| 1st Tertile | 875 | 22.4 | 2,024 | 26.0 |
| 2nd Tertile | 952 | 24.4 | 1,954 | 25.1 |
| 3rd Tertile | 980 | 25.1 | 1,924 | 24.7 |
| Missing | 1,093 | 28.0 | 1,890 | 24.3 |
1
No information for the studies Mexico, Brazil 1, and Brazil 2.
2
No information for the studies China 1 and Mexico.
3
No information for the study China 2
4
No information for the study Mexico
5
No information for the study Mexico
6
No information for the studies China 1, Russia, Brazil 1, and Brazil 2