Change in stunting and its associated factors among children aged less than 5 years in Ethiopia using Ethiopia Demographic and Health Survey data from 2005 to 2019: a multivariate decomposition analysis

OBJECTIVE: The aim of this study is to assess change in stunting and its associated factors among children aged less than 5 years in Ethiopia using Ethiopia Demographic and Health Survey data from 2005 to 2019. DESIGN: A community-based cross-sectional study was conducted. SETTING: The study was conducted in Ethiopia. PARTICIPANTS: In 2005, 4586 individuals were examined, followed by 10 282 in 2011, 9462 in 2016 and 4937 in 2019. PRIMARY AND SECONDARY OUTCOMES: The primary outcome of the study was stunting, and the secondary outcome was factors associated with stunting and its change. A multilevel logistic regression model was fitted to identify individual and community-level factors associated with stunting among children aged less than 5 years. Multivariate decomposition analysis was also carried out to assess the role of compositional characteristics and behavioural change for decline in stunting among children aged less than 5 years in Ethiopia. RESULTS: Over the study period, the prevalence rate of stunting in children aged less than 5 years decreased from 47% to 37% in 2019. Differences in behavioural change among children under the age of 5 years account for 76.69% of the overall decline in stunting prevalence rate in the years 2005–2011, 86.53% in the years 2005–2016, 98.9% in the years 2005–2019, 70.34% in the years 2011–2016 and 73.77% in the years 2011–2019. Behavioural adjustments among breastfed children, diet diversity, place of delivery, ANC follow-up and region have all had a major effect on stunting prevalence rate. The wealth index, parenteral education, child’s age in months, length of breast feeding and area were among the compositional change factors. CONCLUSION: A large percentage of children aged less than 5 years remains stunted in Ethiopia. Stunting was associated with alterations in the compositional and behavioural characteristics of children. Stimulating existing nutritional measures and improving the wealth index will make a significant difference in reducing stunting among Ethiopian children aged less than 5 years.