Table 2.
Meta-analysis of Fish Consumption and Gastric Cancer Risk
| Category of Studies | No. of Studies | Summary OR or RR (95% CI) | I2 |
|---|---|---|---|
| All studies | 17 | 0.87 (0.71-1.07) | 73.3% |
| Case-control studies | 15 | 0.85 (0.68-1.06) | 76.0% |
| Population-based case-control studies | 7 | 0.87 (0.60-1.27) | 82.1% |
| Hospital-based case-control studies | 8 | 0.82 (0.63-1.05) | 56.3% |
| Population-based versus hospital-based case-control studies | 0.0% | ||
| Cohort studies | 2 | 1.11(0.77-1.62) | 0.0% |
| Case-control versus cohort studies | 31.4% | ||
| Western studies | 9 | 0.92 (0.71-1.19) | 80.1% |
| Eastern studies | 8 | 0.80 (0.54-1.16) | 64.3% |
| Western versus Eastern studies Mail assessment Interview versus mail assessment | 0.0% | ||
| Interview assessment | 15 | 0.82 (0.66-1.02) | 69.7% |
| Mail assessment | 2 | 1.26 (1.03-1.55) | 0.0% |
| Interview versus mail assessment | 73.3% |
Abbreviations: OR: Odd Risk, RR: Relative Risk; CI: Confidence Interval