Validation and calibration of the Food Consumption Frequency Questionnaire for pregnant women
São Paulo med. j
; São Paulo med. j;142(2): e2023059, 2024. tab
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LILACS-Express
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| ID: biblio-1515596
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BR1.1
ABSTRACT
ABSTRACT BACKGROUND:
Few food frequency questionnaires (FFQ) have been validated for pregnant women, particularly those in small- and medium-sized cities in different regions of Brazil.OBJECTIVES:
To validate and calibrate a semiquantitative FFQ for pregnant women. DESIGN ANDSETTING:
The study was validated with a sample of 50 pregnant women (≥ 18 years) enrolled in Brazilian prenatal services.METHODS:
An FFQ and a 24-hour recall were used to evaluate dietary intake. Dietary variables were tested for normality and log-converted when asymmetrical. Pearson's Correlation Coefficient was used to validate the questionnaire. Linear regression was applied to extract calibration factors. All variables underlying the consumption analysis were adjusted for energy.RESULTS:
The mean age of the pregnant women was 26 years ± 6.2 years; 58% were in their first trimester, and 30% were identified as overweight/obese. The Pearson correlation analysis results indicated that the FFQ overestimated energy and nutrient intake, whose coefficients ranged from −0.15 (monounsaturated fat) to 0.50 (carbohydrate). Adjusting for energy reduced the mean values of intake coefficients, which now ranged from −0.33 (sodium) to 0.96 (folate). The calibration analysis results indicated variation in the coefficients from −0.23 (sodium) to 1.00 (folate). Calibration produced satisfactory coefficients for the FFQ compared with the reference standard for energy, macronutrients, monounsaturated fat, cholesterol, vitamins B12/C, folate, sodium, iron, and calcium.CONCLUSIONS:
After validating and calibrating tests, we observed that the FFQ was adequately accurate for assessing the food consumption of the pregnant women in this study.
Texte intégral:
1
Indice:
LILACS
langue:
En
Texte intégral:
São Paulo med. j
Thème du journal:
Cirurgia Geral
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Cincia
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Ginecologia
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MEDICINA
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Medicina Interna
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Obstetr¡cia
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Pediatria
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Sa£de Mental
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Sa£de P£blica
Année:
2024
Type:
Article
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Project document