Influence of some covariates on the reproducibility of an Italian semi-quantitative food frequency questionnaire

A. Tavani, E. Negri, M. Ferraroni, B. D’Avanzo, A. Decarli, A. Giacosa, C. La D’Avanzo, O. Nanni, M. T. Parpinel, S. Salvini, R. Talamini, S. Franceschi

Research output: Contribution to journalArticlepeer-review

Abstract

We studied the influence of age, sex, education and time between interviews on the reproducibility of a semi-quantitative food frequency questionnaire (FFQ) developed in Italy for a case-control study on cancers of the breast and digestive tract. The questionnaire had been administered twice to 452 Italian men and women and included the weekly consumption of 77 food items or groups of foods, seven summary questions and three questions on some general dietary habits. Spearman correlation coefficients for the 77 dietary items plus the seven summary questions did not differ between males (median 0.61) and females (median 0.58), volunteers younger than 50 years (median 0.58) and aged 50 or more (median 0.59), volunteers with fewer than 10 years of education (median 0.58) and with 10 or more (median 0.59). A slightly higher Spearman correlation coefficient was found when the two interviews were conducted 5-6 months apart (median 0.60) or more than 6 (median 0.59) than when less than 5 (median 0.55). Similarly, Pearson correlation coefficients for the intake of 27 nutrients or micronutrients, plus caloric intake, computed from the FFQ showed no differences between males (median 0.65) and females (median 0.64), two age groups (median 0.67 for subjects aged

Original languageEnglish
Pages (from-to)319-328
Number of pages10
JournalEuropean Journal of Cancer Prevention
Volume4
Issue number4
Publication statusPublished - 1995

Keywords

  • Diet
  • Epidemiological methods
  • Food frequency questionnaire
  • Nutritional assessment
  • Questionnaires
  • Reproducibility

ASJC Scopus subject areas

  • Cancer Research
  • Epidemiology
  • Oncology
  • Public Health, Environmental and Occupational Health

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