Validation of a self-administered FFQ in adults in Argentina, Chile and Uruguay.
OBJECTIVE
To assess the reproducibility and validity among adults in the Southern Cone of Latin America (Argentina, Chile and Uruguay) of a self-administered FFQ to be used in the CESCAS I Study, an ongoing observational prospective cohort study to detect and follow up CVD and their risk factors, as well as in other epidemiological studies.


METHODS
Relative validity of the FFQ was evaluated by comparing nutrient and selected food group intakes with those from three 24 h recalls (24HR) administered over 6 months. The FFQ was administered at baseline (FFQ1) and again after 3 months (FFQ2).


METHODS
Primary-care centres in Argentina, Chile and Uruguay.


METHODS
Adults (n 147) aged 21-74 years.


RESULTS
Reproducibility (FFQ1 v. FFQ2): the intra-class correlation coefficients for nutrients ranged from 0·52 (potassium) to 0·74 (fat). Validity (FFQ1 v. the average of three 24HR): the Pearson correlations for energy-adjusted nutrients ranged from 0·39 (thiamin and cholesterol) to 0·59 (carbohydrate). Joint classification: overall, 66 % of participants in the lowest 24HR quintile were in the lowest one or two FFQ1 quintiles, and 62 % of those in the highest 24HR quintile were in the highest one or two FFQ1 quintiles. On average, only 4 % were misclassified into extreme quintiles.


CONCLUSIONS
The FFQ version for the Southern Cone seems to present moderate to acceptable relative validity and reliability for its use in the CESCAS I Study to measure dietary exposure.
1South American Center for Cardiovascular Health (CESCAS/SACECH),Institute for Clinical Effectiveness and Health Policy (IECS),Dr Emilio Ravignani 2024,C1414CPV,Buenos Aires,Argentina.
Natalia
N
Elorriaga
1South American Center for Cardiovascular Health (CESCAS/SACECH),Institute for Clinical Effectiveness and Health Policy (IECS),Dr Emilio Ravignani 2024,C1414CPV,Buenos Aires,Argentina.
Vilma E
VE
Irazola
1South American Center for Cardiovascular Health (CESCAS/SACECH),Institute for Clinical Effectiveness and Health Policy (IECS),Dr Emilio Ravignani 2024,C1414CPV,Buenos Aires,Argentina.
María D
MD
Defagó
3Department of Family Medicine, Faculty of Medicine,Universidad de la República,Montevideo,Uruguay.
Mónica
M
Britz
4Department of Medicine,Universidad de la Frontera,Temuco,Chile.
Solange P
SP
Martínez-Oakley
2School of Nutrition,Universidad de Buenos Aires,Buenos Aires,Argentina.
Alicia M
AM
Witriw
1South American Center for Cardiovascular Health (CESCAS/SACECH),Institute for Clinical Effectiveness and Health Policy (IECS),Dr Emilio Ravignani 2024,C1414CPV,Buenos Aires,Argentina.
Adolfo L
AL
Rubinstein
D000328:Adult; D000368:Aged; D001118:Argentina / Q000453:epidemiology; D002318:Cardiovascular Diseases / Q000453:epidemiology / Q000208:ethnology / Q000209:etiology; D002677:Chile / Q000453:epidemiology; D015331:Cohort Studies; D004032:Diet / Q000009:adverse effects / Q000208:ethnology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D018673:Nutrition Policy; D009749:Nutrition Surveys / Q000379:methods*; D010349:Patient Compliance / Q000208:ethnology; D011320:Primary Health Care; D011446:Prospective Studies; D015203:Reproducibility of Results; D012307:Risk Factors; D057566:Self Report; D014583:Uruguay / Q000453:epidemiology; D055815:Young Adult
FFQ; Reproducibility; Southern Cone of Latin America; Validity