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Risk Factors for Perinatal Mortality: Random Effect Model

Author(s): Mohammad Reza Zadkarami

Journal: Asian Journal of Epidemiology
ISSN 1992-1462

Volume: 1;
Issue: 2;
Start page: 53;
Date: 2008;
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Keywords: Correlation pattern | perinatal mortality | stage | risk factors | random effect

This study investigates, using random effect modeling, the relevant risk factors associated with perinatal mortality at the various stages of perinatal mortality. We found that there is general correlation pattern between the stages of perinatal mortality. The conventional analysis results of the data showed, the relevant maternal risk factors in the various stages are different and the circumstances of individuals change substantially from stage to stage. It is found that allowing for the correlation between stages changes the magnitude of the covariate estimates but the extent of the change is not the same for all. Such that some relevant variables that are not significant in the conventional analysis become significant in random effect analysis. Therefore this correlation should be considered in the analysis of data to avoid misleading results.
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