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| Estimating Median Growth of Toddlers in Sub-District Kertosari of Banyuwangi City Based on Weight, Height and BMI Using Spline Estimator |
Nur Chamidah, Ardi Kurniawan, Toha Saifudin
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Abstract:
The paper describes a flexible estimating method of median growth of toddlers in Sub-District Kertosari of Banyuwangi city, a city in East Java Province, Indonesia based on weight, height, and body mass index (BMI) using a spline estimator namely least square spline. A nutritional status of toddlers characterized by a lack of weight , height, and BMI based on anthropometric indexes weight-for-age (W/A), height-for-age (H/A) and BMI-for-age (BMI/A)is called as underweight. Indonesia ranked fifth in the world in terms of malnutrition or about 3.8% of 87 millions of total Indonesian toddlers. Nationally, East Java Province is in the second position for cases of malnutrition in children under five after East Nusa Tenggara Province. In this paper we proposed the flexible estimating method of toddlers median growth using spline estimator based on generalized cross validation (GCV) criterion. The results show that the toddlers growth charts of W/A and H/A for both boys and girls of toddlers in Kertosari aged less than 6 months and aged more than 6 months tend to have an uptrend. Meanwhile, the toddlers growth charts of BMI/A for both boys and girls of toddlers in Kertosari aged more than 6 months tend to have a downward trend. In addition, the results can be used for assessing nutritional status of toddlers in Sub-District Kertosari of Banyuwangi city.
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