Table 2.
Relative validity of daily intakes of foods, energy and nutrients estimated by the first administration of the parent-administered semi-quantitative FFQ (SFFQ1) and the average of the 4 d estimated food records (FR), and correlation between SFFQ1 and FR. A total of fifty-three Danish children aged 3–9 years, from the Capital Region and the Regional Municipality of Bornholm, were included in all analyses
| SFFQ1 | FR | Mean difference (SFFQ – FR) | Correlation between methods | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | Median | P5, P95 | Mean | Median | P5, P95 | Mean† | % | Spearman’s r | 95 % CL | Variance ratio‡ | Corrected Spearman’s r ‡ | |
| Vegetables and vegetable products (g/d) | 278 | 265 | 147, 502 | 128 | 110 | 12, 227 | 151 | 118 | 0·46*** | 0·22, 0·65 | 3·17 | 0·62 |
| Coarse vegetables (g/d) | 112 | 99 | 46, 232 | 39 | 30 | 1, 102 | 73 | 189 | 0·40** | 0·14, 0·60 | 4·43 | 0·58 |
| Fruit and fruit products (g/d) | 206 | 195 | 6, 384 | 166 | 172 | 4, 329 | 40 | 24 | 0·45*** | 0·20, 0·64 | 3·11 | 0·60 |
| Fish and fish products (g/d) | 32 | 25 | 1, 92 | 26 | 18 | 0, 80 | 5 | 18 | 0·63*** | 0·43, 0·77 | 3·24 | 0·85 |
| Canned fish (g/d) | 12 | 7 | 0, 44 | 14 | 3 | 0, 54 | −2 | −14 | 0·63*** | 0·42, 0·76 | 2·72 | 0·82 |
| Rye bread and oats, ‘whole grains’ (g/d)§ | 88 | 92 | 30, 145 | 90 | 84 | 31, 173 | −3 | −3 | 0·58*** | 0·36, 0·73 | 1·83 | 0·70 |
| Sweet drinks (g/d)|| | 125 | 71 | 10, 457 | 105 | 83 | 0, 255 | 21 | 20 | 0·29* | 0·02, 0·52 | 1·46 | 0·34 |
| Candy and chocolate (g/d) | 17 | 15 | 5, 39 | 16 | 14 | 0, 43 | 1 | 9 | 0·31* | 0·05, 0·54 | 9·61 | 0·57 |
| Energy (kJ/d) | 8783 | 8103 | 5443, 13 694 | 6487 | 6509 | 4642, 8486 | 2296 | 35 | 0·12 | −0·16, 0·37 | 4·79 | 0·18 |
| Dietary fibre (g/d) | 26 | 26 | 17, 41 | 20 | 19 | 11, 29 | 7 | 35 | 0·25 | −0·03, 0·49 | 3·41 | 0·34 |
| Protein energy percentage (%)¶ | 15 | 15 | 11, 19 | 15 | 16 | 12, 19 | −0·3 | −2 | 0·30* | 0·03, 0·53 | 5·54 | 0·46 |
| Fat energy percentage (%)¶ | 34 | 34 | 25, 46 | 30 | 31 | 24, 37 | 4 | 13 | 0·48*** | 0·23, 0·66 | 2·92 | 0·63 |
| Carbohydrate energy percentage (%)¶ | 53 | 53 | 44, 63 | 57 | 58 | 49, 64 | −4 | −6 | 0·43** | 0·17, 0·62 | 3·55 | 0·59 |
| Sugar energy percentage (%)¶ | 5 | 5 | 2, 10 | 7 | 7 | 1, 13 | −2 | −26 | 0·28* | 0·01, 0·51 | 5·69 | 0·44 |
P5, 5th percentile; P95, 95th percentile; 95 % CL, 95 % confidence limits.
*P<0·05, **P<0·01, ***P<0·001.
{[Mean (SFFQ−FR)]/[mean (FR)]} ×100.
Variance ratio is the ratio between within- and between-person variances. Spearman correlation coefficient was adjusted for within-person variance using the de-attenuation method.
Including rye bread and oats as a marker of whole grain intake.
Including all non-alcoholic drinks with natural or added sugars, not including drinks with artificial sweeteners.
Intakes of macronutrients expressed as a percentage of energy: (macronutrient absolute value × energy conversion factor) ×100.