Table 1. Characteristics of 306 cases and 605 controls in the Golestan Gastric Cancer Case-Control Study.
| Controls | Cases | p-value* | |
|---|---|---|---|
| N | 605 | 306 | |
| Age (years), mean (SD) # | 63.6 (9.2) | 65.2 (10.8) | 0.02 |
| Female gender, N (%) # | 167 (27.6) | 82 (26.8) | 0.80 |
| Ethnicity, N (%) | 0.00 | ||
| Turkmen | 368 (60.8) | 145 (47.4) | |
| Fars | 85 (14.1) | 62 (19.6) | |
| Turk | 74 (12.2) | 47 (15.4) | |
| Sistani | 56 (9.3) | 32 (10.5) | |
| Others | 22 (3.6) | 22 (7.2) | |
| Married, N (%) | 521 (86.1) | 237 (77.5) | 0.01 |
| Education, N (%) | |||
| No formal education | 443 (73.2) | 252 (82.4) | 0.01 |
| Head of household education, N (%) | |||
| No formal education | 371 (61.3) | 214 (69.9) | 0.00 |
| Urban place of birth, N (%) | 86 (14.2) | 34 (11.4) | 0.27 |
| Urban residence, N (%) # | 191 (31.6) | 99 (32.5) | 0.79 |
| Home ownership, N (%) | 586 (96.9) | 284 (92.8) | 0.01 |
| Home size (m2), mean (SD) | 106.0 (51.8) | 97.7 (47.8) | 0.02 |
| Wealth score | 0.14 | ||
| First quintile | 140 (23.1) | 86 (28.4) | |
| Second quintile | 119 (19.7) | 50 (16.5) | |
| Third quintile | 108 (17.9) | 44 (14.52) | |
| Fourth quintile | 120 (19.8) | 72 (23.8) | |
| Fifth quintile | 118 (19.5 | 51 (16.8) | |
| Total vegetable consumption (g/day), mean (SD) | 185.7 (99.8) | 176.5 (103.0) | 0.21 |
| H. pylori seropositivity, N (%) | 441 (83.7) | 233 (84.1) | 0.87 |
Note: H. pylori infection data missing for 78 controls and 27 cases.
*P-values from Student’s t test (continuous variables) or Pearson’s chi squared test (categorical variables).
# Matching variables