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Analysis of School Absenteeism for Single- vs. Two-Parent Families: A Finite Mixture Roy Approach

Murat K. Munkin & David M. Zimmer

Econometrics2026https://doi.org/10.3390/econometrics14010013article
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Abstract

This paper analyzes factors affecting school absenteeism due to an injury or illness among the US school student population between 6 and 15 years of age. The number of missed school days displays overdispersion and is modeled using the Finite Mixture Roy (FMR) model for count variables. The married/single parent family status (treatment) is potentially endogenous to the dependent variable (missed days). The Roy structure controls observed heterogeneity due to the mother’s marital status. Finite mixtures are intended to control unobserved heterogeneity due to healthy and unhealthy children in the sample. This approach facilitates identification of latent subpopulations in which treatment and marginal effects are relatively homogeneous. The model also incorporates two application-driven extensions. First, probabilities of the latent components are modeled as functions of regressors. Secondly, the mother’s income affects treatment nonparametrically. The FMR model is estimated with two latent components in each state, corresponding to healthy and unhealthy students. The results indicate that maternal marital status decreases annual missed school days by approximately 13 percent for a randomly drawn child; however, this increases absenteeism by about 14 percent among families that self-select into two-parent households, which is evidence of adverse selection.

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https://doi.org/https://doi.org/10.3390/econometrics14010013

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@article{murat2026,
  title        = {{Analysis of School Absenteeism for Single- vs. Two-Parent Families: A Finite Mixture Roy Approach}},
  author       = {Murat K. Munkin & David M. Zimmer},
  journal      = {Econometrics},
  year         = {2026},
  doi          = {https://doi.org/https://doi.org/10.3390/econometrics14010013},
}

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