Poisson regression with a surrogate X: an analysis of vitamin A and Indonesian children's mortality.

S. L. Zeger, S. L. Edelstein

Research output: Contribution to journalArticlepeer-review

Abstract

"A Poisson regression model with a surrogate X variable is proposed to help to assess the efficacy of vitamin A in reducing child mortality in Indonesia. In a recent community trial, the mortality rate in villages receiving vitamin A supplementation was 35% less than in control villages. However, at base-line, control villages were found to have slightly higher rates of xerophthalmia, an ocular disease caused by vitamin A deficiency. It was therefore desirable to adjust the mortality comparison for base-line vitamin A levels as indicated by xerophthalmia prevalence. This paper presents a parametric errors-in-X regression model developed for this purpose. Likelihood methods for fitting and inference are discussed. The model is illustrated on the Indonesian data set." excerpt

Original languageEnglish (US)
Pages (from-to)309-318
Number of pages10
JournalJournal of the Royal Statistical Society. Series C, Applied statistics
Volume38
Issue number2
StatePublished - Jan 1 1989
Externally publishedYes

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty

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