Ayele, Wondimu, Habtamu Tesfaye, Roman Gebreyes, and Tesfayi Gebreselassie. 2013. Trends and determinants of unmet need for family planning and programme options, Ethiopia: Further analysis of the 2000, 2005, and 2011 Demographic and Health Surveys. DHS Further Analysis Reports No. 81. Calverton, Maryland, USA: ICF International. Available at http://dhsprogram.com/pubs/pdf/FA81/FA81.pdf.