Table 4.
Agreement (weighed kappa) and cross-classification of quartiles of energy and nutrients intake*
| Nutrients | Unadjusted data | Energy-adjusted data | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Kw | 95 % CI | Exact agreement (%) | Exact agreement + adjacent (%) | Disagreement (%) | Kw | 95 % CI | Exact agreement (%) | Exact agreement + adjacent (%) | Disagreement (%) | |
| Energy (kcal) | 0·168 | 0·047, 0·289 | 50·7 | 88·5 | 4·5 | – | – | – | – | – |
| Carbohydrates (g) | 0·148 | 0·03, 0·265 | 47·3 | 92·5 | 5·3 | 0·06 | 0·004, 0·116 | 34·8 | 82·7 | 15·4 |
| Protein (g) | 0·14 | 0·015, 0·265 | 42·5 | 86·8 | 12·2 | 0·087 | −0·081, 0·265 | 33·2 | 74·1 | 27·9 |
| Fat (g) | 0·134 | 0·013, 0·265 | 29·0 | 74·5 | 23·5 | 0·052 | −0·022, 0·127 | 40·3 | 89·8 | 7·8 |
| Ca (mg) | 0·179 | 0·077, 0·281 | 35·2 | 71·4 | 25·8 | 0·042 | 0·012, 0·072 | 21·6 | 58·6 | 31·8 |
| Vitamin D (μg) | 0·062 | −0·043, 0·168 | 18·6 | 58·4 | 38·1 | 0·004 | −0·007, 0·014 | 22·9 | 65·7 | 33·1 |
| Folate (μg) | 0·084 | −0·035, 0·204 | 37·2 | 77·8 | 21·4 | 0·084 | −0·035, 0·204 | 30·4 | 63 | 38·8 |
| Fe (mg) | 0·215 | 0·068, 0·362 | 41·9 | 78·2 | 23·8 | 0·179 | −0·011, 0·369 | 35·2 | 67·2 | 26·8 |
| Zn (mg) | 0·115 | 0·023, 0·207 | 30·6 | 67·7 | 35·6 | 0·086 | 0·011, 0·161 | 25·8 | 67·2 | 32 |
| Mg (mg) | 0·248 | 0·095, 0·402 | 49·8 | 89·1 | 9·4 | 0·185 | 0·077, 0·294 | 25·8 | 64·3 | 28·4 |
| Vitamin E (mg) | 0·167 | −0·017, 0·352 | 33·9 | 78·2 | 21·4 | 0·042 | −0·046, 0·131 | 38·6 | 94·6 | 15·4 |
| Vitamin C (mg) | −0·05 | −0·106, 0·006 | 32·6 | 62·5 | 24·1 | 0·03 | −0·025, 0·084 | 26·6 | 62·2 | 33·2 |
| Vitamin B12 (μg) | 0·007 | −0·02, 0·035 | 34·4 | 71·5 | 25·9 | 0·15 | 0·018, 0·293 | 39·9 | 70·8 | 28·3 |
| Vitamin A (μg) | −0·003 | −0·111, 0·104 | 31·6 | 78 | 21·2 | −0·034 | −0·127, 0·059 | 32·3 | 66·3 | 29·1 |
| Thiamine (mg) | 0·211 | 0·011, 0·411 | 39·9 | 83·3 | 12·4 | 0·111 | −0·064, 0·286 | 35·9 | 81·7 | 19 |
| Na (mg) | 0·085 | −0·041, 0·21 | 49·5 | 84·6 | 15·3 | 0·046 | −0·025, 0·118 | 49·5 | 79·5 | 16·1 |
| Se (μg) | 0·075 | −0·021, 0·171 | 41·2 | 85·8 | 31·1 | −0·008 | −0·17, 0·154 | 47·9 | 85 | 17·5 |
| Riboflavin (mg) | 0·064 | −0·049, 0·176 | 37·9 | 80·4 | 16·9 | 0·058 | −0·003, 0·119 | 33·4 | 64·8 | 25·9 |
| Pyridoxine (mg) | 0·044 | −0·075, 0·162 | 49·8 | 83·8 | 6·9 | 0·056 | −0·009, 0·12 | 32·2 | 67·5 | 30·1 |
| K (mg) | 0·006 | −0·079, 0·09 | 41·2 | 85·2 | 10·2 | 0·018 | −0·028, 0·065 | 34·3 | 72·7 | 21·1 |
| P (mg) | 0·075 | −0·01, 0·16 | 44·5 | 84·7 | 12·8 | 0·203 | 0·05, 0·356 | 27·4 | 61·4 | 35·3 |
| Niacin (mg) | 0·181 | 0·001, 0·36 | 40·1 | 81·9 | 16·9 | 0·023 | −0·143, 0·189 | 34·6 | 71·8 | 25·4 |
Kw, weighed kappa.
*
Weighed K was performed between the FFQ and average of 24-HR.