Table 2

Correlation coefficient for validity of the Food frequency questionnaire

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


Roumelioti and Leotsinidis Nutrition Journal 2009 8:8   doi:10.1186/1475-2891-8-8

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