This fact sheet describes the survey methods and sample design in Ethiopia and attrition rates throughout 15 years of the study (from Round 1 in 2002 to Round 5 in 2016). It also provides information on the sites where Young Lives children live in order to contextualise the findings of the accompanying fact sheets, which present preliminary results of the fifth survey round in the four areas of: Education and Learning, Growth and Nutrition, Youth Transitions: Skills, Work and Family Formation, and Poverty and Intergenerational Change.