Dietary intake assessment - Practical considerations


Method

Outcome
Lab Method
-Energy
-Biometry
Direct Observ-
ation
Question-
naire
Weighed Food Record Food Diary 24hr Recall FFQ Diet History Diet Checklist
Burden  (L = Low, M = Medium, H = High)
Researcher - collection      H      H      L      L      L      M      L      M      L
Researcher -
analysis
     H      H      L      H      H      M      M      H      L
Participant      H      L      L      H      H      L      L      M      L
Sample size                                             
Individual
     Yes      Yes      Yes      Yes    Yes    Yes  Yes    Yes      Yes
Group      Yes      Yes      Yes      Yes    Yes    Yes  Yes    Yes      Yes
Population            Yes      Yes               Yes  Yes            Yes
Potential for bias                                             
Recall                  Yes          Yes    Yes  Yes    Yes      Yes
Measurement      Yes      Yes      Yes      Yes    Yes    Yes  Yes    Yes      Yes
Represents usual intake 
Individual
level
     ?                  ?      ?      ?  Yes    Yes      
Group level      ?                  Yes    Yes    Yes  Yes    Yes      Yes
Type of data                                             
Retrospective      Yes            Yes                Yes  Yes    Yes      Yes
Prospective            Yes            Yes    Yes                        
Budget ($ = Low, $$ = Medium, $$$ = High)
$                  Yes                    Yes            Yes
$$                        Yes    Yes    Yes          Yes      
$$$      Yes      Yes                                          
  • Lab = Laboratory
  • FFQ = Food Frequency Questionnaire
  • ? = 'maybe'