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| Groups (n) | Invasive SCC in esophagus | ||
|---|---|---|---|
| Present n (%) | Absent n (%) | p-value | |
| 4-NQO 50 (37) | 14 (37.8) | 23 (62.2) | 0.02 |
| 4-NQO 50 → FO 5% (19) | 13 (68.4) | 6 (31.6) | |
| 4-NQO 50 + FO 5% → FO 5% (17) | 5 (29.4) | 12 (70.6) | |
SCC: squamous cell carcinoma; FO: fish oil
