Table 1.

The scheme of an applied food frequency questionnaire including food products, serving sizes and frequencies in the IOdine Dietary INtake Evaluation-Food Frequency Questionnaire—IODINE-FFQ.

Group of Products	Products	Serving Size	Number of Servings per Week
Dairy products	Whet, sheep milk	300 g (large glass)
	Milk and milk beverages (yoghurt, kefir, buttermilk, cream)	300 g (large glass)
	Milk powder	10 g (tablespoon)
	Condensed milk	10 g (tablespoon)
	Camembert, brie cheese	150 g (packaging)
	Rennet cheese	20 g (thin slice)
	Cottage cheese	200 g (packaging)
	Curd cheese, cream cheese spread	30 g (thin slice, tablespoon)
	Fromage frais	150 g (packaging)
	Processed cheese	25 g (slice, triangle serving)
Eggs		50 g (egg)
Meat	Offal, lamb	100 g (palm of small hand)
	Veal
	Other types of meat
	Cold cuts	15 g (thin slice of ham, 1/3 of wiener)
Fish	Cod, pollock	100 g (palm of small hand)
	Plaice, halibut, tuna, mackerel, salmon
	Flounder, herring, sole, sardine
	Trout, pike, perch, eel, carp
	Smoked eel	50 g (half of palm of small hand)
	Other smoked fishes
	Fish products in tins and pickled herring	50 g (half of small tin, rollmop)
	Herring in a creamy sauce	50 g (2 tablespoons)
Fats		10 g (tablespoon)
Cereal products	Crispbread	10 g (slice)
	Other types of bread	30 g (slice, half of a roll)
	Wheat bran	5 g (tablespoon)
	Cereals, cereal grains	5 g (tablespoon)
	Rice, pasta, groats	100 g of cooked (glass)
Vegetables	Broccoli, spinach	100 g (half of a glass, 1 glass of leafy vegetables)
	Radish, turnip, asparagus, broad bean, kale, green peas, chives
	Other vegetables
Legumes	Peas	15 g of dry (tablespoon)
	Other dry legumes
Potatoes		50 g (2 tablespoons of puree)
Fruits		100 g (half of a glass)
Nuts and seeds	Hazelnuts, peanuts	30 g (handful)
	Other
Beverages	Coffee, tea	250 g (glass)
	Fruit juices, beer
	Wine	150 g (wineglass)
Other	Chocolate	20 g (3–4 chocolate bar squares)
	Iodine-fortified salt	5 g (teaspoon)
	Gelatin