Funding for this research was provided by:
National Research Foundation South Africa (SFH160603167769)
Received: 17 April 2019
Accepted: 6 February 2020
First Online: 12 February 2020
Ethics approval and consent to participate
: Approval has been granted to conduct secondary analysis of the data; ethical approval for the original study was obtained from the South African Medical Association Research Ethics Committee (SAMAREC).This study entailed secondary analysis of the data from South Africa YRBS. Permission to analyse the data has been granted by the original researcher who is also a co-author of the current study.
: Not applicable.
: The authors declare that they have no competing interests.