Findings and data


Young Lives is following the lives of children in two age-groups: a Younger Cohort of 2,000 children who were aged between 6 and 18 months when Round 1 of the survey was carried out in 2002, and an Older Cohort of 1,000 children then aged between 7.5 and 8.5 years. The survey was carried out again in late 2006 and in 2009 (when the younger children were about 8 – the same age as the Older Cohort when the research started in 2002). 

We have just completed the fourth round of our household and child survey (in March 2014) and are currently working on cleaning and analysis of the data. Preliminary findings from Round 4 in Ethiopia are now available. A final round of data collection will take place in 2016 when the Younger Cohort children will be aged 15 to 16 and the Older Cohort will be aged 21 to 22 years old.

 Young Lives study

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The sample

The Young Lives team used multi-stage sampling. The children were sampled in geographic clusters, which were selected through a purposive approach. Within each cluster, children were randomly selected. 

The sample size of the Younger Cohort (2,000 children) was considered an appropriate number given the duration and scope of the study. It was also considered to be sufficiently large for statistical analysis in general, allowing for the detection of moderate-sized differences between sub-groups of children. The Older Cohort sample was selected for comparison and to help us with developing questionnaires and survey instruments. 

The attrition rate to date has been low compared to other longitudinal studies: 2.2% for the Younger Cohort and 8.4% for the Older Cohort between Round 1 and Round 4.

Sample and attrition

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Further details on Young Lives Survey Design and Sampling are available in the most recent fact sheet from Round 4.

Round 4 Preliminary Findings

The fourth round of Young Lives household and child data was collected between October 2013 and March 2014 with the Younger Cohort children now aged between 11 and 12 years old and the Older Cohort aged between 18 and 19 years old. We have published some fact sheets with preliminary findings from Round 4 on Education and Learning; Health and Nutrition; and Youth and Development

Related reports

Tassew Woldehanna, Retta Gudisa, Yisak Tafere and Alula Pankhurst (2011) Understanding Changes in the Lives of Poor Children: Initial Findings from Ethiopia, Young Lives Round 3 Survey Report.

Summary: Understanding Changes in the Lives of Poor Children: Young Lives Round 3 - Summary, September 2011

Alula Pankhurst and Agazi Tiumelissan (2012) Understanding Community Variation and Change in Ethiopia: Implications for Children, Young Lives Working Paper 90.

Young Lives: Ethiopia Round 2 Survey, Country Report, September 2008.

Round 2 Initial Key Findings Summary for Ethiopia, September 2008.

Young Lives Preliminary Country Report: Ethiopia, September 2003.

More Young Lives publications from Ethiopia can be found here. For a full list of all Young Lives publications, including cross-cutting themes and cross-country studies, go to our international website.