Table 6.
Odds ratio for oral cancer associated with tertiles of blood micronutrient values
| Vitamins | Cases N (%) | Controls N (%) | OR | 95% CI |
|---|---|---|---|---|
| Vitamin A (mg/dl) | ||||
| Lowest (<32.0) | 16 (25.4) | 28 (35.9) | 1.0 | |
| Middle (32.0–48.0) | 23 (36.5) | 26 (33.3) | 2.1 | 0.9,5.0 |
| Upper (>48.0) | 24 (38.1) | 24 (30.8) | 1.8 | 0.8, 4.1 |
| Vitamin C (mg/l) | ||||
| Lowest (<14.0) | 20 (30.8) | 30 (35.3) | 1.0 | |
| Middle (14.0–18.8) | 22 (33.8) | 31 (36.5) | 1.1 | 0.4,2.6 |
| Upper (>18.8) | 23 (35.4) | 24 (28.2) | 1.4 | 0.6,3.4 |
| Vitamin E (mg/dl) | ||||
| Lowest (<453) | 15 (25.0) | 31 (39.2) | 1.0 | |
| Middle (453–646) | 20 (33.3) | 26 (32.9) | 1.4 | 0.6, 3.1 |
| Upper (>646) | 25 (41.7) | 22 (27.8) | 1.9 | 0.8, 4.3 |
| Plasma Zinc (μg/l) | ||||
| Lowest (<611) | 21 (32.3) | 29 (34.9) | 1.0 | |
| Middle (611–778) | 24 (36.9) | 25 (30.1) | 1.5 | 0.7,3.5 |
| Highest (>778) | 20 (30.8) | 29 (34.9) | 1.1 | 0.5,2.6 |
| Erythrocyte Zinc (μg/g Hb) | ||||
| Lowest (<29.1) | 21 (32.8) | 28 (35.4) | 1.0 | |
| Middle (29.1–34.0) | 19 (29.7) | 30 (38.0) | 0.9 | 0.4,2.0 |
| Highest (>34.0) | 24 (37.5) | 21 (26.6) | 1.6 | 0.7,3.8 |
| Riboflavin (AC) | ||||
| Lowest (<1.14) | 16 (26.7) | 30 (41.7) | 1.0 | |
| Middle (1.14–1.29) | 19 (31.7) | 23 (31.9) | 1.6 | 0.7,3.8 |
| Highest (>1.29) | 25 (41.7) | 19 (26.4) | 3.0 | 1.3,7.0 |
| Thiamin status (AC) | ||||
| Lowest (<1.02) | 22 (34.4) | 28 (36.4) | 1.0 | |
| Middle (1.02–1.09) | 19 (29.7) | 25 (32.5) | 1.2 | 0.5,2.8 |
| Highest (>1.09) | 23 (35.9) | 24 (31.2) | 1.6 | 0.7,3.7 |
| Glutathione (mmol/g Hb) | ||||
| Lower (<4.94) | 24 (40.7) | 19 (27.5) | 1.0 | |
| Middle (4.94–5.91) | 21 (35.6) | 21 (30.4) | 0.7 | 0.3,1.7 |
| Highest (>5.91) | 14 (23.7) | 29 (42.0) | 0.4 | 0.1,0.9 |
Adjusted for age, sex and smoking status.