<![CDATA[ABSTRACT The problem of underweight needs special attention because is the beginning of chronic nutritional problems such as stunting, it even can lead to death. This study aims to identify risk factors for underweight in children aged 0-59 months in urban and rural Indonesia. Using data from the 2019 Under-five child Nutritional Status Study with a cross-sectional design with a sample of 84,819 toddlers. The highest proportion of underweight children aged 24-35 months (18.9%) and 36-47 months (18.2%), male (17.6%), living in rural areas (18.8%) from the Nusa Tenggara region (26.4%) and had a history of diarrhoeal disease (19.7%). The results of multivariate analysis showed, risk of underweight among children who lived in urban and rural areas was almost the same, which is from the age group 24-35 months (AOR=2.19; 95% CI=1.93-2.50) and (AOR=1.99; 95%CI=1.76–2.26); male (AOR=1.18; 95%CI=1.66–2.15) and (AOR=1.18; 95%CI=1.12-1.24); from the Nusa Tenggara region (AOR =1.89; 95%CI = 1.66-2.15) and (AOR=2.05; 95%CI=1.87-2.26) but children under five in rural areas have extra risk which was a history of diarrhoeal disease (AOR=1.37; 95%CI=1.18-1.58). The risk factors for underweight in under-five children in urban and rural areas are in the age of 24-35 months, male and from the Nusa Tenggara region. The difference is the history of diarrhoeal disease in rural areas. A history of suffering from diarrhoea increases the risk of underweight in children. It is necessary to increase knowledge related to the nutritional needs of children and explore the main causes of nutritional problems based on regional conditions. Keywords: underweight, under-five children, urban and rural ABSTRAK Masalah underweight perlu mendapatkan perhatian khusus karena berat badan kurang (gizi kurang/ buruk) merupakan permulaan masalah gizi kronis seperti pendek (stunted) bahkan jika dibiarkan dapat menyebabkan kematian. Penelitian ini bertujuan untuk mengidentifikasi faktor risiko underweight pada balita usia 0-59 bulan di perkotaan dan perdesaan Indonesia. Menggunakan data hasil Studi Status Gizi Balita Tahun 2019 dengan desain potong lintang pada balita usia 0 – 59 bulan di Indonesia dengan jumlah sampel 84.819 balita. Proporsi balita yang mengalami underweight terbanyak pada kelompok umur 24-35 bulan (18,9%) dan 36-47 bulan (18,2%), laki-laki (17,6%), tinggal di perdesaan (18,8%) berasal dari regional Nusa Tenggara (26,4%) dan memiliki riwayat penyakit diare (19,7%). Hasil analisis multivariat menunjukkan risiko underweight pada balita yang tinggal di perkotaan dan perdesaan relatif sama yaitu dari kelompok umur 24 – 35 bulan (AOR= 2,19; 95%CI= 1,93-2,50) dan (AOR= 1,99; 95%CI= 1,76 – 2,26); laki-laki (AOR= 1,18; 95%CI= 1,66 – 2,15) dan (AOR= 1,18; 95%CI = 1,12-1,24); dari regional Nusa Tenggara (AOR= 1,89; 95%CI= 1,66 - 2,15) dan (AOR= 2,05; 95%CI= 1,87 – 2,26) tetapi balita di wilayah perdesaan memiliki faktor risiko tambahan yaitu riwayat penyakit diare (AOR= 1,37; 95%CI= 1,18 - 1,58). Faktor risiko underweight pada balita di perkotaan dan perdesaan yaitu berada pada kelompok umur 24 – 35 bulan, laki-laki dan dari regional Nusa Tenggara. Yang menjadi perbedaan adalah riwayat penyakit diare balita di perdesaan. Riwayat menderita diare meningkatkan risiko underweight pada balita yang tinggal di wilayah perdesaan. Peningkatan pengetahuan terkait kebutuhan gizi pada balita dan penggalian penyebab utama masalah gizi berdasarkan kondisi wilayah perlu dilakukan. [Penel Gizi Makan 2022, 45(1):47-58]]]>
