Tobacco use and behaviour among South African adolescents and young adults: systematic review and meta-analysis.

"Competing interests: None declared."

"Funding: This project is funded by the Sustained Academic Research and Training Program (SACERT). Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the SACERT. OO’s research-protected time was partially supported by the Incentive Funding for Rated Researchers’ Grant from the National Research Foundation (Number:132385). Research reported in this publication was partially supported by the South African Medical Research Council (SAMRC) through its Division of Research Capacity Development under the Research Capacity Development Initiative from funding received from the South African National Treasury. The content and findings reported/illustrated are the sole deduction, view and responsibility of the researcher and do not reflect the official position and sentiments of the funders."

"PROSPERO registration number: CRD42023428369."