Food groups included in the analysis, indicating the source of each question

		Teenager's FFQ
Food group	Mother's FFQ	Packed lunch	School dinner	Bought food	All food
Meat dishes	1		2
Cold meats	1	1
Poultry	1
Meat sausages/burgers	1		1	1
Meat pies/pasties	1	1	1	1
Offal	1
Fish	4		1
Chicken/turkey in crispy coating	1
White fish in breadcrumbs/batter	1		1
Eggs	1		1
Cheese	1	1
Rice	1		1
Pasta	1		1
Pizza	1		1	1
Baked beans/tinned pasta	2		1
Fried food	1
Raw fruit	1	1	1	1	1
Tinned fruit	1
Salad	2	1	1
Peas	1		1
Sweetcorn	1		1
Green vegetables	1		1
Root vegetables	2		1
Meat substitutes	2
Vegetarian pies/pasties	1		1
Nuts	2
Pulses	1
Potatoes	1		1
Roast potatoes	1		1
Chips	2		1	1
Crisps		1		1	1
Biscuits					2
Crispbreads	1
Chocolate/sweets			1	1	2
White bread	1
Other bread	1
Butter/margarine	1
Non-homemade sandwiches		1	1	1
Lunchbox snacks	1	1
Yoghurt/fromage frais	1		1
Puddings	1		1
Milk puddings/custard/mousse	2		1
Ice cream	1
Ice lollies	1	1
Cakes/buns	1		1
Ketchup/brown sauce	1
Mayonnaise/salad cream/dressing	1
Oat-based cereal	1
Bran-based cereal	1
Other cereal	1
Cereal bars	1
Full-fat milk to drink	1
Other milk to drink	1
Flavoured milk drinks	1				1
Fruit juice	1				1
Squash					1
Water	2				1
Fizzy drinks					2
Tea/coffee	2
Herbal tea	1
Alcohol	4

The numbers show how many questions contributed to each food group from each questionnaire.