Reproducibility and validity of a food frequency questionnaire among pregnant women in a Mediterranean area

Nutrition Journal

Carmen Iñiguez¹  Marisa Rebagliato¹  Mario Murcia¹  Ferran Ballester⁶  Rosa Ramón²  Ian S Young⁴  Fernando Granado³  Manuela García-de-la-Hera⁵  Daniel Gimenez-Monzó⁵  Eva-María Navarrete-Muñoz⁵  Jesús Vioque⁵ 

[1]Centro Superior de Investigación en Salud Pública (CSISP), Consejería de Sanidad, Avda Catalunya 21, 46020, Valencia, Spain

[2]Dirección General de Salud Pública, Consejería de Sanidad, Avda Catalunya 21, 46020, Valencia, Spain

[3]Unidad de Vitaminas. Servicio de Bioquímica Clínica Hospital Universitario Puerta de Hierro-Majadahonda Edificio Laboratorios (Peine 7), Planta 1ª c/Maestro Rodrigo, 2 28222, Madrid, Spain

[4]Centre for Public Health, School of Medicine, Dentistry and Biomedical Sciences, Queen’s University Belfast, Belfast, UK

[5]CIBER en Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain

[6]University of Valencia, Valencia, Spain

关键词: Validity;    Pregnancy;    Food frequency questionnaire;    Nutrient intake;    Diet;   

Others  :  811347
DOI  :  10.1186/1475-2891-12-26

 received in 2012-10-22, accepted in 2013-02-14,  发布年份 2013

【 摘 要 】

Background

Studies exploring the role of diet during pregnancy are still scarce, in part due to the complexity of measuring diet and to the lack of valid instruments. The aim of this study was to examine the reproducibility and validity (against biochemical biomarkers) of a semi-quantitative food frequency questionnaire (FFQ) in pregnant women.

Methods

Participants were 740 pregnant women from a population-based birth cohort study in Valencia (INMA Study). We compared nutrient and food intakes from FFQs estimated for two periods of pregnancy (reproducibility), and compared energy-adjusted intake of several carotenoids, folate, vitamin B12, vitamin C and α-tocopherol of the FFQ in the first trimester with their concentration in blood specimens (validity).

Results

Significant correlations for reproducibility were found for major food groups and nutrients but not for lycopene (r=0.06); the average correlation coefficients for daily intake were 0.51 for food groups and 0.61 for nutrients. For validity, statistically significant correlations were observed for vitamin C (0.18), α-carotene (0.32), β-carotene (0.22), lutein-zeaxantin (0.29) and β-cryptoxantin(0.26); non-significant correlations were observed for retinol, lycopene, α-tocopherol, vitamin B12 and folate (r≤0.12). When dietary supplement use was considered, correlations were substantially improved for folate (0.53) and to a lesser extent for vitamin B12 (0.12) and vitamin C (0.20).

Conclusion

This study supports that the FFQ has a good reproducibility for nutrient and food intake, and can provide a valid estimate of several important nutrients during pregnancy.

【 授权许可】

   
2013 Vioque et al; licensee BioMed Central Ltd.

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