Article History
Received: 24 April 2018
Accepted: 23 October 2018
First Online: 7 November 2018
Authors’ information
: Not applicable
: Nigeria Demographic and Health Survey data 2013 was obtained from demographic and Health Survey (DHS) program website. Formal approval to use the data was obtained from the DHS program. The data was approved by the Nigerian National Health Research Ethics Committee with the references number NHREC 01/01/2007. Also, all the personal identifiers have been removed from the data; therefore, the confidentiality and anonymity of respondents are guaranteed.
: Not applicable
: The authors declare that they have no competing interests.
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