Open AccessDevelopment and validation of a food frequency questionnaire for consumption of polyphenol‐rich foods in pregnant women
Author(s) -
Vian Izabele,
Zielinsky Paulo,
Zilio Ana Maria,
Mello Anne,
Lazzeri Bruna,
Oliveira Andressa,
Lampert Kenya Venusa,
Piccoli Antônio,
Nicoloso Luis Henrique,
Bubols Guilherme Borges,
Garcia Solange Cristina
Publication year - 2015
Publication title -
maternal and child nutrition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 63
eISSN - 1740-8709
pISSN - 1740-8695
DOI - 10.1111/mcn.12025
Subject(s) - medicine , intraclass correlation , food frequency questionnaire , reproducibility , pregnancy , cross sectional study , body mass index , gestational age , obstetrics , environmental health , food science , zoology , statistics , psychometrics , pathology , clinical psychology , mathematics , biology , genetics , chemistry
Previous studies have shown that maternal consumption of polyphenol‐rich foods after the third trimester of pregnancy may interfere with the anatomical and functional activity of the fetal heart as, to our knowledge, there are no validated instruments to quantify total polyphenols in pregnant women. The aim of this study was evaluate the reproducibility and validity of a food frequency questionnaire ( FFQ ), with 52 items, to assess the intake of polyphenol‐rich foods in pregnant women in B razil. This cross‐sectional study included 120 pregnant women who participated in nutritional interviews in two moments. The intake of polyphenols estimated by the developed FFQ was compared with the average of two 24‐h recalls (24 HR ), with the average intake measured by a 3‐day food diary ( D 3days) and with the urinary excretion of total polyphenols. The triangular method was applied to calculate Pearson's correlation coefficients, intraclass correlation and B land– A ltman plots for the FFQ , using an independent biochemical marker, in addition to classification by quarters of consumption. The questionnaires were log transformed, adjusted for body mass index and gestational age. The adjustment for energy was applied only of 24 HR and D 3days. Analysis of the reproducibility between the FFQ showed a very high correlation ( r = 0.72; P < 0.05). A low but significant association was observed between the FFQ and urinary excretion (0.23; P = 0.01). The association between the dietary survey methods was moderate to very high ( r = 0.36 to r = 0.72; P < 0.001). In conclusion, this questionnaire showed reproducibility and validity for the quantification of consumption of total polyphenols in pregnant women.