Document Detail

Reproducibility and validity of coffee and tea consumption in Italy.
MedLine Citation:
PMID:  15042137     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The reproducibility and validity of coffee, decaffeinated coffee and tea intake has not been adequately studied, particularly in Italy, where coffee drinking is peculiar in terms of type and amount of coffee consumed. DESIGN: We compared coffee and tea consumption, measured by two interviewer-administered food frequency questionnaires (FFQ), with average intake derived from two 7-day dietary (DD) records (the reference method) on 395 volunteers. The Pearson correlation coefficients (r) were used to assess both reproducibility and validity of information on coffee intake. RESULTS: A satisfactory level of reproducibility and validity of the pattern consumption was observed for coffee, decaffeinated coffee and tea. The reproducibility for both sex combined showed r of 0.74-0.78 for coffee, 0.57-0.65 for decaffeinated coffee and 0.61-0.67 for tea. The validity was about 0.70 for coffee, around 0.58 for decaffeinated coffee and 0.56-0.60 for tea intake. CONCLUSIONS: The FFQ is a satisfactorily reliable and valid instrument for collecting information on coffee, decaffeinated coffee and tea intake.
M Ferraroni; A Tavani; A Decarli; S Franceschi; M Parpinel; E Negri; C La Vecchia
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of clinical nutrition     Volume:  58     ISSN:  0954-3007     ISO Abbreviation:  Eur J Clin Nutr     Publication Date:  2004 Apr 
Date Detail:
Created Date:  2004-03-25     Completed Date:  2004-07-26     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8804070     Medline TA:  Eur J Clin Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  674-80     Citation Subset:  IM    
Dipartimento di Medicina, Chirurgia e Odontoiatria, Università di Milano, Polo San Paolo, Milano, Italy.
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MeSH Terms
Age Distribution
Body Mass Index
Diet Surveys
Educational Status
Epidemiologic Methods
Food Habits*
Italy / epidemiology
Middle Aged
Reproducibility of Results
Sex Distribution
Reg. No./Substance:
0/Coffee; 0/Tea

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

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