Modeling Geographically Weighted Negative Binomial Regression (GWNBR) on Stunting Incidence in Malang Regency: Bahasa Indonesia

Elok  Pratiwi; Henny  Pramoedyo; Suci  Astutik; Fahimah  Fauwziyah

doi:10.20956/j.v19i1.21757

Authors

Elok Pratiwi Universitas Brawijaya
Henny Pramoedyo Universitas Brawijaya
Suci Astutik Universitas Brawijaya
Fahimah Fauwziyah Universitas Brawijaya

DOI:

https://doi.org/10.20956/j.v19i1.21757

Keywords:

GWNBR, Stunting, Malang Regency

Abstract

Discrete data on the response variable can be analyzed using poisson regression. The assumption of equidispersion in poisson regression must be fulfilled, but in practice there are many problems of overdispersion. The negative binomial regression model is used to overcome the problem of overdispersion, but this model is global while in some cases each location has different characteristics. Therefore, a method that considers the effects of spatial heterogeneity is needed. If the response variable is discrete data that is overdispersed and includes spatial effects, a model called Geographically Weighted Negative Binomial Regression (GWNBR) is developed. The GWNBR method can be applied in the health sector, such as in stunting. The prevalence of stunting in Malang Regency is still quite high, there is 25.7%. By conducting the GWNBR test, 385 models were obtained, one of them is Tulungrejo Village with factors influencing the incidence of stunting, namely access to permanent healthy latrines, access to posyandu, exclusive breastfeeding, population density and community empowerment. From three weights used, namely the Adaptive Gaussian Kernel, Adaptive Bisquare Kernel and Adaptive Tricube Kernel, the best model was obtained from the Adaptive Bisquare Kernel weighting with the smallest AIC is -211.3763.

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