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Table 2 Correlation coefficient for validity of the Food frequency questionnaire

From: Relative validity of a semiquantitative food frequency questionnaire designed for schoolchildren in western Greece

Food items/groups r
Cornflakes 0.58
Milk chocolate 0.61
Fruit 0.63
Pasta 0.66
Rice 0.66
Delicatessen 0.66
Potatoes 0.67
Sweets 0.67
Boiled vegetables 0.69
Fruit juices 0.70
Souvlaki 0.70
Breakfast 0.71
Pizza 0.72
Meat 0.72
Biscuits 0.73
Egg 0.74
Fresh vegetables 0.76
Legumes 0.76
Bread 0.77
Sandwiches 0.77
Fish food 0.78
Potato chips 0.79
Refreshments 0.79
Pies 0.82
Dairy 0.84
Milk 0.90