Table 1.
Study population characteristics, odds ratios, and 95% CI for lifetime gastric cancer screening among pooled 2006-2007 Korea National Cancer Screening Survey (n=3,336)
| Variable | Lifetime gastric cancer screening (weighted %) |
cOR (95% CI) | p for trend | aORa) (95% CI) | p for trend | |
|---|---|---|---|---|---|---|
| No (unweighted n=1,521) | Yes (unweighted n=1,815) | |||||
| Sex | ||||||
| Male | 52.4 | 44.9 | 1.00 (reference) | - | 1.00 (reference) | - |
| Female | 47.6 | 55.1 | 1.36 (1.18-1.55) | 1.29 (1.12-1.49) | ||
| Age group (yr) | ||||||
| 40-49 | 49.8 | 35.7 | 1.00 (reference) | < 0.001 | 1.00 (reference) | < 0.001 |
| 50-59 | 23.9 | 28.5 | 1.66 (1.40-1.97) | 1.71 (1.42-2.05) | ||
| ≥ 60 | 26.3 | 35.8 | 1.90 (1.62-2.24) | 2.02 (1.64-2.49) | ||
| Residential area | ||||||
| Metropolitan | 49.1 | 45.1 | 1.00 (reference) | 0.003 | 1.00 (reference) | 0.001 |
| Urban | 39.7 | 40.6 | 1.12 (0.96-1.29) | 1.16 (1.00-1.36) | ||
| Rural | 11.2 | 14.3 | 1.39 (1.12-1.73) | 1.44 (1.14-1.81) | ||
| Monthly household income | ||||||
| ≤ 1,499 USD | 26.7 | 28.5 | 1.00 (reference) | 0.878 | 1.00 (reference) | < 0.001 |
| 1,500-2,499 USD | 30.2 | 28.1 | 0.87 (0.73-1.05) | 1.25 (1.02-1.53) | ||
| 2,500-3,499 USD | 24.9 | 24.3 | 0.92 (0.76-1.11) | 1.52 (1.21-1.90) | ||
| ≥ 3,500 USD | 18.3 | 19.2 | 0.98 (0.80-1.21) | 1.54 (1.20-1.96) | ||
| Education (yr) | ||||||
| ≤ 11 | 36.2 | 45.1 | 1.00 (reference) | < 0.001 | 1.00 (reference) | 0.693 |
| 12-15 | 46.5 | 38.6 | 0.67 (0.57-0.78) | 0.90 (0.74-1.09) | ||
| ≥ 16 | 17.3 | 16.3 | 0.76 (0.62-0.92) | 1.07 (0.84-1.37) | ||
| Family history of cancer | ||||||
| No | 91.7 | 87.7 | 1.00 (reference) | - | 1.00 (reference) | - |
| Yes | 8.3 | 10.3 | 1.27 (1.01-1.61) | 1.28 (1.00-1.63) | ||
| Self-rated health status | ||||||
| Good | 66.5 | 55.2 | 1.00 (reference) | < 0.001 | 1.00 (reference) | < 0.001 |
| Fair | 25.3 | 31.2 | 1.48 (1.27-1.73) | 1.49 (1.26-1.74) | ||
| Poor | 8.2 | 13.6 | 2.00 (1.59-2.53) | 1.81 (1.42-2.31) | ||
| Salt preference | ||||||
| Level 1 (very low) | 6.5 | 8.3 | 1.00 (reference) | 0.283 | 1.00 (reference) | 0.052 |
| Level 2 (low) | 35.9 | 36.1 | 0.78 (0.59-1.03) | 0.79 (0.59-1.06) | ||
| Level 3 (moderate) | 29.2 | 26.4 | 0.71 (0.53-0.94) | 0.71 (0.53-0.95) | ||
| Level 4 (high) | 27.2 | 28.3 | 0.81 (0.61-1.08) | 0.75 (0.56-1.01) | ||
| Level 5 (very high) | 1.3 | 0.8 | 0.52 (0.25-1.07) | 0.44 (0.20-0.97) | ||
CI, confidence interval; cOR, crude odds ratio; aOR, adjusted odds ratio.
a)
Adjustments were made for age, sex, residential area, monthly household income, education, family history of cancer, and self-rated health status.