Do mothers overestimate breast feeding duration? an example of recall bias from a study in southern brazil

Sharon R A Huttly, Fernando C. Barros, Cesar G. Victora, Jorge U. Beria, J. Patrick Vaughan

Research output: Contribution to journalArticle

Abstract

The problem of recall bias when reporting breast feeding duration is investigated. Data are presented from the follow-up of over 1,000 children from a birth cohort (1982) in southern Brazil, when they were on average 11, 23, and 47 months of age. Compared with the response given at 11 months of age, 24% of mothers misclassified the duration (grouped into 3-month categories) at age 23 months and 30% at age 47 months. Women who were richer and/or better educated were significantly more likely to report longer durations, while those poorer and less educated did not tend to misclassify more in one direction than in the other.

Original languageEnglish (US)
Pages (from-to)572-575
Number of pages4
JournalAmerican Journal of Epidemiology
Volume132
Issue number3
StatePublished - Sep 1990
Externally publishedYes

Keywords

  • Breast feeding
  • Epidemiologic methods
  • Memory

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Epidemiology

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    Huttly, S. R. A., Barros, F. C., Victora, C. G., Beria, J. U., & Vaughan, J. P. (1990). Do mothers overestimate breast feeding duration? an example of recall bias from a study in southern brazil. American Journal of Epidemiology, 132(3), 572-575.