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Table 1 Modifications in the SFFQ-2007 compared to the SFFQ-1999, in the photographic booklet and the food composition databases used

From: Effect of changes in a food frequency questionnaire: comparing data from two national dietary survey instruments among 12-month-old infants

Modifications SFFQ-1999 SFFQ-2007
Frequency range • Frequency range after ”never/less than once per month” • Frequency range after ”never/less than once per month”
  o Often to seldom   o Seldom to often
 (e.g. times per day to times per week)  (e.g. times per week to times per day)
Frequency options • Highest frequency option: • Highest frequency option:
  o Yoghurt: “4 or more times per day”   o Yoghurt: “3 or more times per day”
  o Vitamin/mineral supplements: “3 or more times per day”   o Vitamin/mineral supplements: “2 or more times per day”
  o Dinner dishes:   o Dinner dishes:
 “Never/less than once per month”  “Never/less than once per month”
 “1 time per week”  “1 time per month”
 “2 times per week”  “2 times per month”
 “3 times per week”  “3 times per month”
 “4 times per week”  “1 time per week”
 “5 or more times per week”  “2 times per week”
 “1-3 times per month”  “3 or more times per week”
Number of main questions • 44 main questions • 51 main questions
  o 3 questions regarding use of breast milk   o 3 questions regarding use of breast milk
  o 13 main questions regarding use of approximately 140 food items   o 14 main questions regarding use of approximately 160 food items
Photographic booklet • 16 photograph series • 17 photograph series
    o A new photograph series of sausages was added
    o Rice photograph series replaced with smaller portion sizes
Food composition database used • Database used for nutrient calculations is IE-96 • Database used for nutrient calculations is AE-07
  o The energy content of foods does not include energy from dietary fibre   o Dietary fibre contributes with 8 kilojoules (kJ) per gram fibre
    o Approximately 100 food item codes were the same as in SFFQ-1999
  1. Dinner dishes refers to 16 and 19 different types of dinner foods like chicken, sausages, fish fingers, pancakes, pizza etc. in the SFFQ-1999 and SFFQ-2007, respectively.