ALSPAC diet resource

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ALSPAC diet resource

• Dr Pauline Emmett
• Senior Research Fellow
• Nutritionist Dietitian

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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

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Diet in ALSPAC

• The assessment of diet has been an integral part
  of ALSPAC from the beginning

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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

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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

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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

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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

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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

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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

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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

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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

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Sample Diary Page
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Further information

• Please ask if you would like
• A paper copy or power point
• Web details
• http//www.bristol.ac.uk/alspac/sci-com/quest
  s/
• http//www.bristol.ac.uk/alspac/documents/nutritio
  n-2.pdf