Transcript Food record
ALSPAC diet resource Dr Pauline Emmett Senior Research Fellow Nutritionist & Dietitian The ALSPAC cohort 14,000 pregnant women EDD April 1991 to Dec 1992 Living in Avon in South West England Information collected by • • • • Self-completion questionnaire Medical records Biological samples Hands-on measurements Diet in ALSPAC The assessment of diet has been an integral part of ALSPAC from the beginning Dietary methodology Food frequency questionnaires • Mother, father & child Age at introduction of foods and drinks Eating habits & attitudes to food • Mother & child Food record • Child Food frequency questionnaire Asked about food eaten nowadays Gave a list of 43 - 54 foods to tick • • • • • • meat – 5-8 separate questions fish – 3-5 separate questions vegetables - 7 separate questions fruit - 3 separate questions breakfast cereals - 3 separate questions and so on 0 0.5 2 5.5 10 Foods eaten every day Asked about types of some foods • Bread – e.g white, wholemeal etc • Milk – e.g. full fat, semi-skimmed • Spreading fats – e.g. butter, flora Asked about amounts of some foods • number of slices of bread • number of cups of tea and coffee Uses of FFQ data Dietary Patterns • Uses FFQ answers directly • Kate Northstone has done a lot of work on these Calculation of nutrient intakes • • • • List of appropriate foods Appropriate portions sizes Appropriate nutrient data Very much an estimate FFQs with nutrient data Mothers • 32 weeks pregnancy, 4 years later Partners • Partial during the pregnancy, 4 years later Children • 3 years, 4 years, 7 years and 9 years Food Records 3-day unweighed food record sent in advance with instructions When possible checked with carer/child at clinic coded using British food tables all records checked, outliers rechecked Food records collected Parental completion 10% random sub-sample (CIF) • • • • • 4 months (1 day only) - 933 infants 8 months - 1178 infants 18 months - 1026 children 3.5 years - 863 children 5 years – 750 children Whole cohort (including CIF) • 7 years – 7230 Food records used at age 10 & 13 years 3-days records Completed by child Parental help Clinic interview Over 6000 each time Nutrients & food groups calculated Sample Diary Page Further information • Please ask if you would like – A paper copy or power point • Web details http://www.bristol.ac.uk/alspac/sci-com/quests/ http://www.bristol.ac.uk/alspac/documents/nutrition-2.pdf