Text and Data Mining valid from 2019-06-21
Received: 7 June 2018
Accepted: 7 June 2019
First Online: 21 June 2019
Ethics approval and consent to participate
: The study is based on a secondary data analysis based on data from PDHS 2012–13, a publicly available dataset. Therefore, an ethical approval is not required.
: Not applicable.
: The authors declare that they have no competing interests. FF serves on the Editorial Board of BMC Public Health as Associate Editor.