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Nutrition and consumption data from the EFS. By Clare Burgon Defra Food Statistics Team http://statistics.defra.gov.uk/esg/publications/efs/default.asp. Background. Defra receives food & drink data from the Expenditure & Food Survey Continuous survey to address seasonality

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nutrition and consumption data from the efs
Nutrition and consumption data from the EFS

By Clare Burgon

Defra

Food Statistics Team

http://statistics.defra.gov.uk/esg/publications/efs/default.asp

background
Background
  • Defra receives food & drink data from the Expenditure & Food Survey
  • Continuous survey to address seasonality
  • The EFS started in April 2001
  • Food & drink data was previously collected under the National Food Survey
  • Started in 1940
  • Extended to cover Eating Out in 1994
  • Extended to include Northern Ireland from 1996
  • EFS food and drink data recently revised back to 2001 to include free food and unspecified meals
data collection
Data collection
  • Data collected over 2 weeks
  • Records weight/volume and amount paid for all food and drink brought home (including free food)
  • Records amount paid for takeaway meals and snacks eaten at home, Defra estimates portion size
  • Records amount paid for all food and drink consumed away from home and type of meal
  • Where possible, whole meals eaten out are split into food components
the results
The Results
  • Trends are the main strength of the survey with some data going back to 1974 and even to 1940
  • Consumption – average per person per week (using purchases as a proxy)
  • Expenditure – average per person per week
  • Nutrient intake - average per person per day (using nutrient conversion factors)
  • All figures are averages – individual consumption or gender differences can not be identified
trends informing policy
Trends informing policy
  • Allows for 10% wastage
  • Uses household and eating out data
  • FSA run the National Diet and Nutrition Survey (NDNS) which has more accurate data but not trends
trends informing policy1
Trends informing policy
  • Allows for 10% wastage
  • Excluded potatoes
  • Only uses household purchases
publications
Publications
  • The results are published in the annual report ‘Family Food’ at United Kingdom level.
  • Next publication due in December 2008
  • Also available in excel datasets

Additional analyses includes:

  • Country/region
  • Household composition
  • Income group of Household Reference Person
  • Age of HRP
  • Ethnic origin of HRP
  • Occupational class of HRP
calculating purchases
Calculating purchases
  • Each household is given a weight calculated by the ONS.
  • Weights range from 0.001 to 12.33318. The average is around 3.7. A survey household with a weight of 3.7 essentially represents 3700 UK households.
  • Household calculation:
  • Eating out calculation:
calculating nutrient intakes
Calculating nutrient intakes
  • Defra uses the food and drink coding structure used by the EFS
  • The Food Standard Agency provide nutrient profiles for subgroups of the EFS codes
  • Defra does a market share analysis of the FSA codes to determine how to calculate an overall profile per EFS code
calculating nutrient intakes1
Calculating nutrient intakes
  • Multiply purchased quantities by nutrient co-efficient to reach final figure per nutrient
  • Nutrient coefficients are updated by the FSA on a rolling program. Recent updates include sausages, breakfast cereals and cheese. Buns, cakes and pastries will be updated next.
nutrients by recommended level
Nutrients by recommended level
  • Some key nutrients are also expressed as a % of energy intake
  • These figures can be measured against government guidelines to access the health of the nation
plans for the future
Plans for the future
  • When required, Defra currently estimates 10% wastage. This is currently being revised using data from WRAP (Waste & Resources Action Programme)
  • FSA are revising some of their nutrient profiles with up to date nutritional information
  • Defra are revising the market shares of the nutrient profiles
  • Defra are planning to update eating out portion sizes
  • Defra are looking into calculating standard errors for nutrient intakes