Received: 9 November 2017
Accepted: 2 May 2018
First Online: 10 May 2018
Ethics approval and consent to participate
: It is not applicable because the data was collected by performance monitoring and accountability 2020 (PMA2020)/Ethiopia survey project.
: Participants were made aware in the consent form that the results of the study would be published but that no data would be presented to allow the identification of individuals.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.