Relative validity of a food frequency questionnaire in patients coinfected with hepatitis C virus and human immunodeficiency virus
Rev. Soc. Bras. Med. Trop
;
50(1): 117-120, Jan.-Feb. 2017. tab
Article
in English
| LILACS
| ID: biblio-1041393
ABSTRACT
ABSTRACT INTRODUCTION:
Validation of food frequency questionnaires (FFQs) is recommended for accurate measurement of habitual food consumption. We assessed the relative validity of a FFQ in patients coinfected with hepatitis C virus and human immunodeficiency virus.METHODS:
Each patient responded to a FFQ and three 24-hour food recalls. Pearson's correlation and weighted Kappa index analyses were performed to identify the FFQ relative validity and concordance.RESULTS:
De-attenuated correlation coefficients ranged from 0.35 (vitamin B1) to 0.81 (selenium). The concordance index ranged from 0.07 (vitamin C) to 0.51 (calcium).CONCLUSIONS:
The FFQ showed satisfactory relative validity for most nutrients.
Full text:
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Index:
LILACS (Americas)
Main subject:
Energy Intake
/
Diet Records
/
HIV Infections
/
Diet Surveys
/
Hepatitis C, Chronic
/
Feeding Behavior
Type of study:
Prognostic study
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Rev. Soc. Bras. Med. Trop
Journal subject:
Tropical Medicine
Year:
2017
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade Federal de Ciências da Saúde de Porto Alegre/BR
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