Received: 19 March 2020
Accepted: 25 March 2021
First Online: 1 April 2021
: This study was approved by the Research Ethics Committee of Hawler Medical University. UNICEF Iraq MICS team granted the author permission to access and use the Iraq MICS 2011 and 2018 datasets used in this study.
: Not applicable.
: The author declares that he has no competing interests.