Effectiveness of Video-Observed Therapy in Tuberculosis Management: A Systematic Review

This systematic review aimed to assess the association between video-observed therapy (VOT) and treatment adherence among TB patients and the benefits and limitations of this treatment modality. The systematic review used the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) flow guideline. Multiple databases including Cochrane, Lilacs, PubMed, Scopus, Lancet, Google Scholar, Science Direct, Directory of Open Access Journal (DOAJ), and BMC were employed to identify relevant articles published between 2012 and 2024. All data were extracted using a standardized data extraction form and both narrative and quantitative approaches were used to present the review outcomes and available evidence. Twenty-nine articles were included in the final analysis, with most using a prospective cohort (n = 10) research design. Treatment adherence rates were relatively higher in TB patients managed using VOT relative to those subjected to direct-observed therapies (DOTs). Likewise, using the VOT approach in most interventional studies lacking a control group depicted higher treatment adherence rates post-intervention. Although asynchronous VOT was used in most studies compared to the synchronous approach, the treatment adherence level was not significantly different between the two methods of VOT delivery. The predominant benefits of VOT include time-saving, cost-effectiveness, flexibility, and fewer self-reported side effects, whereas the main limitation was the privacy of patients' data and information. Video-directly observed therapy (VDOT) is a promising approach for TB treatment with the capacity to improve adherence to medication regimes and reduce the cost of treatment, stigmatization, and burden on healthcare providers.