Table 3.
Dietary determinants of plasma vitamin C deficiency in KTR
| Vitamin C deficiency | ||||||
|---|---|---|---|---|---|---|
| Crude | Adjusted† | |||||
| Odds Ratio | 95% CI | P value | Odds Ratio | 95% CI | P value | |
| Fruit, 100 g/d | 0.75 | 0.62–0.89 | 0.002 | 0.78 | 0.64–0.94 | 0.01 |
| Vegetable, 100 g/d | 0.95 | 0.74–1.21 | 0.68 | 0.97 | 0.74–1.27 | 0.84 |
| Dairy, 100 g/d | 1.03 | 0.96–1.12 | 0.40 | 1.01 | 0.92–1.10 | 0.88 |
| Meat, 100 g/d | 0.85 | 0.65–1.10 | 0.22 | 0.84 | 0.62–1.12 | 0.24 |
| Fish, 100 g/d | 0.58 | 0.30–1.05 | 0.09 | 0.62 | 0.31–1.19 | 0.17 |
| Nuts, 100 g/d | 0.30 | 0.09–0.86 | 0.03 | 0.52 | 0.16–1.62 | 0.28 |
| Bread, 100 g/d | 1.00 | 0.81–1.23 | 0.98 | 1.01 | 0.79–1.28 | 0.95 |
| Coffee, 100 ml/d | 0.99 | 0.93–1.07 | 0.97 | 0.99 | 0.92–1.08 | 0.90 |
| Tea, 100 ml/d | 0.98 | 0.93–1.03 | 0.42 | 1.00 | 0.94–1.06 | 0.96 |
| Vitamin C intake, 100 mg/d | 0.38 | 0.24–0.61 | < 0.001 | 0.44 | 0.26–0.72 | 0.002 |
| Vitamin C supplementation use, yes | 0.21 | 0.09–0.44 | < 0.001 | 0.25 | 0.10–0.55 | 0.001 |
Univariable and multivariable logistic regression analyses were performed
†Adjustment was performed in each logistic regression analysis by history of diabetes, active smoking status, HDL cholesterol, estimated glomerular filtration rate, plasma albumin concentration, and time since transplantation