Conclusion
CSHH
ALD
Our study demonstrated the effectiveness of an mHealth app in the overall treatment adherence and self-efficacy to ART among people living with HIV in Vietnam. It is evident that individuals who used the intervention have better adherence at follow-up appointments, and therefore mHealth interventions should continue to be developed. However, further studies with larger sample sizes and longer follow-up periods are recommended to validate and extend our findings.This study received funding from Bach Mai Medical College, Bach Mai Hospital. The article process charge of this paper is supported by National University of Singapore (NUS) Department of Psychological Medicine (R-177-000-100-001/R-177-000-003-001) and NUS iHeathtech Other Operating Expenses (R-722-000-004-731).Authors' Contributions: Methodology: AHTN, TVN, CAL, MWBZ; Formal analysis: AHTN, TVN, CAL, MWBZ; Writing-original draft: BXT, TMB, CSHH, RCMH, LB, PA; Writing-review and editing: BXT, TMB, ALD, LHN, LB, PA; Obtained funding: CAL, MWBZ, CSHH, RCMH; Software: ALD, LHN, TVN; Supervision: CSHH, RCMH.Conflicts of Interest: None declared.Full data on socioeconomic characteristics and health status of participants.CONSORT-eHealth checklist (V1.6.1).