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Effects of omitting a covariate in Poisson models when the data are balanced.
Petersen MR; Deddens JA
Can J Stat 2000 Apr-Jun; 28(2):439-445
The authors show that for balanced data, the estimate of effects of interest and of their standard errors are unaffected when a covariate is removed from a multiplicative Poisson model. As they point out, this is not verified in the analogous linear model, nor in the logistic model. In the first case, only the estimated coefficients remain the same, while in the second case, both the estimated effects and their standard errors can change.
Models; Statistical analysis; Analytical processes; Author Keywords: Generalized linear model; maximum-likelihood estimation; Poisson model
Issue of Publication
The Canadian Journal of Statistics
Page last reviewed: June 15, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division