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
Dans Anglais
| 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.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Ration calorique
/
Journaux alimentaires
/
Infections à VIH
/
Enquêtes sur le régime alimentaire
/
Hépatite C chronique
/
Comportement alimentaire
Type d'étude:
Étude pronostique
Limites du sujet:
Femelle
/
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Rev. Soc. Bras. Med. Trop
Thème du journal:
Médecine tropicale
Année:
2017
Type:
Article
Pays d'affiliation:
Brésil
Institution/Pays d'affiliation:
Universidade Federal de Ciências da Saúde de Porto Alegre/BR
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