Document Detail

Improving food frequency questionnaires: a qualitative approach using cognitive interviewing.
MedLine Citation:
PMID:  7797809     Owner:  NLM     Status:  MEDLINE    
In an attempt to improve data quality and ease of administration of standard self-administered food frequency questionnaires, various alternative approaches were tried for inquiring about frequency of consumption, portion size, seasonal intake, and food preparation. Evaluation consisted of a cognitive interviewing method in which respondents verbalize their thought process while completing several variations of a questionnaire. Interviewers observed and asked follow-up probe questions to evaluate problems or inconsistencies verbalized by respondents. Consensus and judgment by interviewers and observers suggested several problematic features of food frequency questionnaires: formatting of questions about frequency and portion size; computing average frequencies for aggregated food items or for foods eaten seasonally; comprehension of many items; and ordering of foods. These findings led to cognitive refinement and innovations, which included detailed questions regarding preparation or use of low-fat varieties or other alternatives to help better describe specifics of intake for some foods; questions on seasonal intake for several foods; inclusion of portion size ranges; and additional response categories for frequency of intake. Cognitive interviewing is an important step in pinpointing cognitive problems in dietary questionnaires.
A F Subar; F E Thompson; A F Smith; J B Jobe; R G Ziegler; N Potischman; A Schatzkin; A Hartman; C Swanson; L Kruse
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of the American Dietetic Association     Volume:  95     ISSN:  0002-8223     ISO Abbreviation:  J Am Diet Assoc     Publication Date:  1995 Jul 
Date Detail:
Created Date:  1995-08-03     Completed Date:  1995-08-03     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7503061     Medline TA:  J Am Diet Assoc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  781-8; quiz 789-90     Citation Subset:  AIM; IM    
National Cancer Institute, Division of Cancer Prevention and Control, Bethesda, MD 20892-7344, USA.
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MeSH Terms
Diet Records*
Interviews as Topic / methods*
Middle Aged
Questionnaires / standards*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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