Table 4.
Cross-classification of energy-adjusted daily intakes of nutrients and food groups in quartiles as assessed with the average of two 24-h diet recall and the FFQ in the Dar es Salaam Urban Cohort Hypertension Study (DUCS-HTN), 2014 (n 317)
| Correctly classified (%) | Same or adjacent quartile (%) | Opposite quartiles (%) | Weighted kappa | |
|---|---|---|---|---|
| Expected if randomly distributed | 25 | 63 | 13 | 0·00 |
| Energy (kcal) | 28 | 68 | 13 | 0·08 |
| Macronutrients | ||||
| Carbohydrate (g) | 28 | 65 | 11 | 0·05 |
| Carbohydrate (% of energy) | 29 | 66 | 9 | 0·09 |
| Protein (g) | 28 | 66 | 8 | 0·09 |
| Protein (% of energy) | 31 | 64 | 7 | 0·11 |
| Fat (g) | 26 | 64 | 11 | 0·03 |
| Fat (% of energy) | 29 | 66 | 11 | 0·08 |
| SFA (g) | 23 | 60 | 11 | −0·02 |
| MUFA (g) | 25 | 72 | 9 | 0·10 |
| PUFA (g) | 29 | 69 | 10 | 0·10 |
| Cholesterol (mg) | 26 | 66 | 13 | 0·04 |
| Vitamins | ||||
| Vitamin A (μg RAE) | 27 | 64 | 13 | 0·02 |
| Niacin (mg) | 32 | 69 | 9 | 0·14 |
| Pantothenic acid (mg) | 32 | 69 | 8 | 0·14 |
| Thiamin (mg) | 29 | 66 | 9 | 0·09 |
| Riboflavin (mg) | 26 | 60 | 13 | −0·03 |
| Vitamin B6 (mg) | 29 | 69 | 9 | 0·11 |
| Vitamin B12 (μg) | 29 | 68 | 10 | 0·10 |
| Folate (μg) | 30 | 66 | 11 | 0·08 |
| Vitamin C (mg) | 25 | 64 | 9 | 0·04 |
| Vitamin D (μg) | 24 | 62 | 11 | 0·01 |
| Vitamin E (μg) | 30 | 64 | 12 | 0·06 |
| Minerals | ||||
| Ca (mg) | 31 | 68 | 9 | 0·12 |
| Fe (mg) | 31 | 68 | 10 | 0·11 |
| Mg (mg) | 31 | 68 | 12 | 0·09 |
| Na (mg) | 31 | 70 | 10 | 0·13 |
| P (mg) | 29 | 69 | 11 | 0·10 |
| K (mg) | 26 | 65 | 10 | 0·05 |
| Zn (mg) | 26 | 65 | 10 | 0·05 |
| Median | 28 | 66 | 10 | 0·07 |
RAE, retinol activity equivalents.