Table 3. Odds ratio of death from esophageal cancer for screened subjects compared with never screened subjects stratified by gender.
| Screening factors | Men |
Women |
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cases% | Controls% | OR | 95% CI | Cases% | Controls% | OR | 95% CI | |||||
| Ever attended | ||||||||||||
| Never | 117 | 75.0 | 303 | 64.7 | 1 | 65 | 67.0 | 163 | 56.0 | 1 | ||
| Ever | 39 | 25.0 | 165 | 35.3 | 0.54 | 0.35–0.86 | 32 | 33.0 | 128 | 44.0 | 0.51 | 0.29–0.92 |
| Age of participating in the screening | ||||||||||||
| Never screened | 117 | 75.0 | 303 | 64.7 | 1 | 65 | 67.0 | 163 | 56.0 | 1 | ||
| 40–49 years | 5 | 3.2 | 11 | 2.4 | 2.38 | 0.37–15.23 | 4 | 4.1 | 15 | 5.2 | 0.59 | 0.12–2.98 |
| 50–59 years | 16 | 10.3 | 73 | 15.6 | 0.46 | 0.23–0.92 | 16 | 13.4 | 49 | 16.8 | 0.54 | 0.20–1.42 |
| 60 years and over | 18 | 11.5 | 81 | 17.3 | 0.52 | 0.29–0.95 | 15 | 15.5 | 64 | 22.0 | 0.50 | 0.23–1.08 |
| P for trend | 0.007 | 0.030 | ||||||||||
| Time before reference date | ||||||||||||
| Never screened | 117 | 75.0 | 303 | 64.7 | 1 | 65 | 67.0 | 163 | 56.0 | 1 | ||
| Within 12 months | 20 | 12.8 | 58 | 12.4 | 1.06 | 0.54–2.10 | 22 | 22.7 | 62 | 21.3 | 1.20 | 0.52–2.79 |
| Within 24 months | 23 | 14.7 | 84 | 17.9 | 0.73 | 0.41–1.29 | 23 | 23.7 | 76 | 26.1 | 0.79 | 0.38–1.62 |
| Within 36 months | 24 | 15.4 | 107 | 22.9 | 0.55 | 0.32–0.93 | 25 | 25.8 | 91 | 31.3 | 0.66 | 0.35–1.25 |
| Within 48 months | 26 | 16.7 | 114 | 24.4 | 0.56 | 0.34–0.94 | 27 | 27.8 | 100 | 34.4 | 0.62 | 0.33–1.17 |
The subjects who ever participated in endoscopic screening were stratified by the age (40–49 years, 50–59 years, 60 years or older) when they participated in screening and by time before the reference date (within 12, 24, 36, and 48 months before the reference date).