Validation of a food frequency questionnaire to assess the consumption of carotenoids, fruits and vegetables among adolescents: the method of triads

Cadernos de Saúde Pública

Betzabeth Slater¹  Carla Cristina Enes¹  Rossana Verónica Mendoza López¹  Nágila Raquel Teixeira Damasceno¹  Silvia Maria Voci¹ 

[1] ,Universidade de São Paulo Faculdade de Saúde Pública São Paulo,Brasil

关键词: Food Consumption;    Questionnaire;    Adolescent;    Validation Studies;    Consumo de Alimentos;    Questionário;    Adolescente;    Estudos de Validação;   

DOI  :  10.1590/S0102-311X2010001100010

来源: SciELO

【 摘 要 】

The aim of this study was to validate the intake of carotenoids, fruits and vegetables estimated by the Food Frequency Questionnaire for Adolescents (FFQA) using the method of triads. Blood samples were collected from 80 elementary school adolescents to assess serum levels of β-carotene. Partial correlation coefficients (r) were calculated between an estimated intake of carotenoids, fruits and vegetables and the serum levels of β-carotene. Validity coefficients were calculated using the method of triads. With the exception of carotenoids, partial r from the food frequency questionnaire (FFQ) were greater than those of the 24-hour recall (24hR). The fruit/vegetable group showed the highest partial r for the FFQ (r = 0.235) and the 24hR (r = 0.137). The highest validity coefficient was obtained for the vegetable group, as assessed by the FFQ (r = 0.873). On average, the validity coefficient values for the FFQ were greater than those obtained for the 24hR or the β-carotene serum levels. The FFQA is an accurate tool for estimating the intake of carotenoids, fruits and vegetables in this population group.

【 授权许可】

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