Table 1 Frequency distributions of selected variables in gastric cancer cases and cancer free controls
From: The VEGF -634G>C promoter polymorphism is associated with risk of gastric cancer
Cases (n = 171) | Controls (n = 353) | ||||
|---|---|---|---|---|---|
Variables | n | % | n | % | P* |
Age (years) | 59.7 ± 12.6 | 57.6 ± 11.2 | 0.135 | ||
≤ 45 | 24 | 14.0 | 47 | 13.3 | |
45-59 | 90 | 52.6 | 216 | 61.2 | |
>59 | 57 | 33.3 | 90 | 25.5 | |
Sex | |||||
Female | 56 | 32.7 | 104 | 29.5 | 0.444 |
Male | 115 | 67.3 | 249 | 70.5 | |
Ethnicity | |||||
Non-Hispanic White | 120 | 70.2 | 258 | 73.1 | 0.486 |
Non-White | 51 | 29.8 | 95 | 26.9 | |
Smoking status | |||||
Current | 34 | 19.9 | 48 | 13.6 | |
Former | 64 | 39.2 | 136 | 38.5 | 0.126 |
Never | 70 | 40.9 | 169 | 47.9 | |
Alcohol use | |||||
Current | 63 | 36.8 | 115 | 32.5 | |
Former | 33 | 19.3 | 45 | 12.8 | 0.037 |
Never | 75 | 43.9 | 193 | 54.7 | |
Tumor type | |||||
Intestinal | 101 | 59.1 | |||
Diffuse | 20 | 11.7 | |||
Mixed | 50 | 29.2 | |||