Prevalence of extrapulmonary tuberculosis among people living with HIV/AIDS in Southeast Asia: a systematic review and meta-analysis.

The dual burden of human immunodeficiency virus (HIV) and tuberculosis (TB) impacts people living with HIV (PLHIV) coinfected with TB. Although some primary studies have been reported on the burden of extrapulmonary TB (EPTB) among PLHIV in Southeast Asia (SEA), there is no systematic review or meta-analysis that attempts to summarize the available literature. Therefore, this review aims to summarize the prevalence of EPTB/HIV co-infection in SEA using meta-analysis based on a systematic review of published articles and gray literature. A comprehensive 3-stage methodology was adopted to conduct a thorough literature search, encompassing both published and gray literature. Data sources such as MEDLINE and Web of Science were searched for articles reporting data from SEA between 2010 and 2022. Findings were reported following the Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines and were sourced using a predefined search strategy from different databases. The Joanna Briggs Institute prevalence studies checklist was employed for critical appraisal. The meta-analysis of proportions was carried out using the "metaprop" function in R software (version 4.3.1) to generate pooled estimates. Effects were summarized using random-effects models, and sources of heterogeneity were explored through I2, utilizing subgroup and sensitivity analyses. Publication bias was assessed using funnel plots and pertinent statistical tests, including Egger's regression analysis. A total of 474 studies were initially identified in our search. After the removal of duplicates and a meticulous screening process of titles and abstracts, along with the application of exclusion criteria, 22 studies comprising 34,740 PLHIV were included in the final meta-analysis. The summary effect or pooled proportion estimate of EPTB among PLHIV was found to be 18% [95% confidence interval (CI): 15,22; heterogeneity: τ2=0.0056; degrees of freedom=21, p<0.001; I2=99%]. Our study showed that there was a diverse range of prevalence of EPTB among PLHIV in the SEA region, which ranged from 5% (95% CI: 4.0-7.0) in South Korea to 48% (95% CI: 41.0-55.0) in Thailand. Our systematic review and meta-analysis indicate a notably higher prevalence of EPTB among PLHIV. Early diagnosis of EPTB is crucial to mitigating associated morbidity and mortality. Therefore, a thorough medical history and comprehensive physical examination are imperative in assessing PLHIV, aiming to promptly identify and rule out EPTB. After a diligent evaluation, appropriate diagnostic measures and tailored management strategies should be promptly instituted.