Table 5.
Cross-classification between quartiles of carotenoids in plasma* and quartiles of recorded food intakes in a web-based food recall (WebFR) among 4th graders (8–9 years) and 8th graders (12–14 years) in Norway (n 261), September–December 2013
| β-Carotene | α-Carotene | α-+β-Carotene | β-Cryptoxanthin | Lycopene | Lutein+zeaxanthin | Total carotenoids | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cross-classification, % classified in | ||||||||||||||
| SAQ | OQ | SAQ | OQ | SAQ | OQ | SAQ | OQ | SAQ | OQ | SAQ | OQ | SAQ | OQ | |
| WebFR intakes | ||||||||||||||
| Vegetables | 67·8 | 7·7 | 72·0 | 8·0 | 70·1 | 6·9 | 65·1 | 10·7 | 69·3 | 10·3 | 67·4 | 9·2 | 71·3 | 7·7 |
| Fruits | 64·4 | 11·5 | 67·8 | 9·2 | 65·9 | 10·0 | 67·0 | 8·4 | 61·3 | 11·5 | 65·9 | 10·7 | 64·0 | 9·2 |
| Juice | 62·8 | 14·9 | 62·5 | 14·6 | 62·5 | 12·6 | 67·8 | 12·3 | 62·5 | 16·1 | 64·0 | 14·9 | 62·8 | 14·9 |
| Sum VFJ | 66·3 | 10·3 | 70·1 | 8·0 | 68·6 | 8·8 | 67·8 | 8·4 | 66·3 | 12·3 | 68·6 | 10·3 | 68·2 | 8·8 |
| β-Carotene RF† | 74·3 | 5·4 | 77·0 | 5·0 | 76·6 | 4·6 | ||||||||
| α-Carotene RF‡ | 66·7 | 11·5 | 71·6 | 10·0 | 69·0 | 9·2 | ||||||||
| β-Cryptoxanthin RF§ | 72·8 | 3·8 | ||||||||||||
| Lycopene RF|| | 73·6 | 5·4 | ||||||||||||
| Lutein+zeaxanthin RF¶ | 69·0 | 8·8 | ||||||||||||
| Total carotenoid RF** | 74·3 | 5·4 | 77·0 | 5·0 | 70·9 | 6·1 | 72·0 | 5·0 | 64·4 | 10·3 | 68·6 | 8·0 | 71·6 | 6·1 |
SAQ, correctly classified: classified into the same or adjacent quartile; OQ, grossly misclassified: classified into opposing quartiles; sum VFJ, sum of vegetables, fruits and juice; RF, rich foods.
The dried blood spot method was used to collect samples of non-fasting whole blood. A fixed haematocrit value of 2 was used to convert whole-blood values to plasma values.
Foods included (presented in descending order from the most eaten): carrot, broccoli, pepper, lettuce, leek, spinach, apricot, cantaloupe melon, parsley, chilli.
Foods included: carrot.
Foods included (presented in descending order from the most eaten): orange juice, clementine, pepper, orange, corn (maize), mango, watermelon, popcorn, pineapple, peach, basil, chilli.
Foods included (presented in descending order from the most eaten): canned tomato, fresh tomato, ketchup, fresh cherry tomato, tomato puree, watermelon, boiled tomato, tomato soup powder.
Foods included (presented in descending order from the most eaten): broccoli, pepper, lettuce, corn (maize), cornflakes, corn meal, leek, popcorn, peas, corn flour, Brussels sprouts, spinach, basil, parsley.
Foods included: all foods included in the carotenoid-rich foods for the single carotenoids.