Race-specific validation of food intake obtained from a comprehensive FFQ: the Adventist Health Study-2.
Public Health Nutr
; 14(11): 1988-97, 2011 Nov.
Article
em En
| MEDLINE
| ID: mdl-21557864
ABSTRACT
OBJECTIVE:
To assess race-specific validity of food and food group intakes measured using an FFQ.DESIGN:
Calibration study participants were randomly selected from the Adventist Health Study-2 (AHS-2) cohort by church, and then by subject-within-church. Intakes of forty-seven foods and food groups were assessed using an FFQ and then compared with intake estimates measured using six 24 h dietary recalls (24HDR). We used two approaches to assess the validity of the questionnaire (i) cross-classification by quartile and (ii) de-attenuated correlation coefficients.SETTING:
Seventh-day Adventist church members geographically spread throughout the USA and Canada.SUBJECTS:
Members of the AHS-2 calibration study (550 whites and 461 blacks).RESULTS:
The proportion of participants with exact quartile agreement in the FFQ and 24HDR averaged 46 % (range 29-87 %) in whites and 44 % (range 25-88 %) in blacks. The proportion of quartile gross misclassification ranged from 1 % to 11 % in whites and from 1 % to 15 % in blacks. De-attenuated validity correlations averaged 0·59 in whites and 0·48 in blacks. Of the forty-seven foods and food groups, forty-three in whites and thirty-three in blacks had validity correlations >0·4.CONCLUSIONS:
The AHS-2 questionnaire has good validity for most foods in both races; however, validity correlations tend to be higher in whites than in blacks.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ingestão de Energia
/
Inquéritos e Questionários
/
Comportamento Alimentar
Tipo de estudo:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
America do norte
Idioma:
En
Revista:
Public Health Nutr
Assunto da revista:
CIENCIAS DA NUTRICAO
/
SAUDE PUBLICA
Ano de publicação:
2011
Tipo de documento:
Article
País de afiliação:
Estados Unidos