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All Journal Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan
Logananta Puja Kusuma
Dinas Komunikasi Informatika dan Statistik, Provinsi Nusa Tenggara Barat, Jalan Udayana Nomor 14, Mataram, Nusa Tenggara Barat 83122, Indonesia
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science Immunology & microbiology Mathematics Physics Social Sciences

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Pengembangan Model Semiparametrik Spline untuk Analisis Berat Badan Balita di Lombok Barat Lilik Hidayati; Logananta Puja Kusuma; Pahmi Husain
Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Vol. 5 No. 4 (2025): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/panthera.v5i4.897

Abstract

Malnutrition remains a significant public health problem in developing countries, including Indonesia. In addition to stunting that has received a lot of attention, the problem of underweight nutrition in toddlers still requires serious studies and interventions. This study aims to model the nonlinear relationship between age and weight of toddlers, as well as identify factors that affect the incidence of underweight in West Lombok Regency. The semiparametric approach is used by applying piecewise polynomial regression and truncated splines with variations in polynomial orders and number of node points. The research data included toddler weight as a response variable, as well as 22 predictor variables representing the child's health condition, maternal characteristics, feeding practices, and household sanitation. The selection of the best model is made based on the Akaike Information Criterion (AIC) criteria. The results of the analysis showed that the two-order piecewise polynomial model with four knots was the best model, indicated by the lowest AIC value and the coefficient of determination (R²) of 97%. These findings indicate that the problem of underweight in toddlers is complex and multidimensional, requiring an integrated intervention approach across sectors. The semiparametric approach has been shown to be effective in capturing the growth patterns of toddlers that are not linear and dynamic.
Co-Authors Lilik Hidayati Pahmi Husain