Perbedaan proporsi obesitas sentral berdasarkan perilaku konsumsi dan faktor lainnya pada penduduk dewasa (usia 20-45 tahun) di Provinsi Sumatera Utara: analisis data Riskesdas 2018 = The difference in proportion about central obesity between consumption factor and the other factors among adult aged 20-45 years old in North Sumatera Province: data analysis of Riskesdas 2018