TY - JOUR
T1 - Poisson regression with a surrogate X
T2 - an analysis of vitamin A and Indonesian children's mortality.
AU - Zeger, S. L.
AU - Edelstein, S. L.
PY - 1989
Y1 - 1989
N2 - "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
AB - "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
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U2 - 10.2307/2348061
DO - 10.2307/2348061
M3 - Article
C2 - 12157992
AN - SCOPUS:0024404733
SN - 0035-9254
VL - 38
SP - 309
EP - 318
JO - Journal of the Royal Statistical Society. Series C, Applied statistics
JF - Journal of the Royal Statistical Society. Series C, Applied statistics
IS - 2
ER -