Document Detail


Validation of a food frequency questionnaire for women with osteoporosis.
MedLine Citation:
PMID:  19390745     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The importance of nutrient intakes in osteoporosis prevention in treatment is widely recognized. The objective of the present study was to develop and validate a FFQ for women with osteoporosis. The questionnaire was composed of 60 items, separated into 10 groups. The relative validation was accomplished through comparison of the 3-Day Food Record (3DR) with the FFQ. The 3DR was applied to 30 elderly women with confirmed osteoporosis, and after 45 days the FFQ was administrated. Statistical analysis comprised the Kolmogorov-Smirnov, Student T test and Pearson correlation coefficient. The agreement between two methods was evaluated by the frequency of similar classification into quartiles, and by the Bland-Altman method. No significant differences between methods were observed for the mean evaluated nutrients, except for carbohydrate and magnesium. Pearson correlation coefficients were positive and statistically significant for all nutrients. The overall proportion of subjects classified in the same quartile by the two methods was on average 50.01% and in the opposite quartile 0.47%. For calcium intake, only 3% of subjects were classified in opposite extreme quartiles by the two methods. The Bland-Altman analysis demonstrated that the differences obtained by the two methods in each subject were well distributed around the mean of the difference, and the disagreement increases as the mean intake increases. These results indicates that the FFQ for elderly women with osteoporosis presented here is highly acceptable and is an accurate method that can be used in large-scale or clinical studies for evaluation of nutrient intakes in a similar population.
Authors:
G A P Pereira; P S Genaro; L C Santos; K S Sarkis; M M Pinheiro; V L Szjenfeld; N J Schuch; L A Martini
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  The journal of nutrition, health & aging     Volume:  13     ISSN:  1279-7707     ISO Abbreviation:  J Nutr Health Aging     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-04-24     Completed Date:  2009-08-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100893366     Medline TA:  J Nutr Health Aging     Country:  France    
Other Details:
Languages:  eng     Pagination:  403-7     Citation Subset:  IM    
Affiliation:
Nutrition Department, School of Public Health, São Paulo University, São Paulo, Brazil.
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MeSH Terms
Descriptor/Qualifier:
Aged
Aged, 80 and over
Brazil
Calcium, Dietary / administration & dosage
Diet Records
Female
Food Habits*
Geriatric Assessment / methods,  statistics & numerical data
Humans
Middle Aged
Nutrition Surveys*
Nutritional Status
Osteoporosis, Postmenopausal / prevention & control*
Postmenopause
Questionnaires / standards*
Reproducibility of Results
Chemical
Reg. No./Substance:
0/Calcium, Dietary

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


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