Table 4 Agreement for validity of the FFQ
Food items/groups | Value of kappa | Strength of agreement |
|---|---|---|
Potatoes | 0.361 | Poor |
Fruit | 0.381 | Poor |
Sweets | 0.400 | Poor |
Sandwiches | 0.403 | Poor |
Fresh vegetables | 0.460 | Fair |
Meat | 0.473 | Fair |
Cornflakes | 0.477 | Fair |
Fruit juices | 0.481 | Fair |
Breakfast 1 | 0.483 | Fair |
Bread | 0.502 | Fair |
Milk chocolate | 0.525 | Fair |
Egg | 0.537 | Fair |
Souvlaki | 0.540 | Fair |
Refreshments | 0.549 | Fair |
Potato chips | 0.569 | Fair |
Boiled vegetables | 0.574 | Fair |
Pasta | 0.583 | Fair |
Biscuits | 0.588 | Fair |
Rice | 0.592 | Fair |
Pizza | 0.594 | Good |
Dairy | 0.605 | Good |
Sausages | 0.626 | Good |
Pies | 0.657 | Good |
Fish food | 0.715 | Good |
Legumes | 0.725 | Good |
Cheese | 0.731 | Good |
Milk | 0.812 | Very Good |