[1] Bahir Dar University,Department of Statistics, College of Science
[2] Mekdela Amba University,Department of Statistics, College of Natural and Computational Science
[3] University of Pretoria,School of Health Systems and Public Health, Faculty of Health Science
[4] China Agricultural University,Department of Development Studies, College of Humanities and Development Studies
[5] Mekdela Amba University,Department of Rural Development and Agricultural Extension, College of Agriculture and Natural Resources