A. Moghimbeigi

Robust Inference to Parameter Estimates in the Zero-Inflated Generalized Poisson: The Risk Factors Affecting the Fertility Rate

Introduction: Fertility data frequently exhibit excess zeros, overdispersion, and within-cluster correlation, rendering conventional count models inadequate. Methods: We propose a multilevel zero-inflated generalized Poisson (ZIGP) model based on the Robust Expectation– Solution (RES) algorithm. The model comprises tw...