Research Artcle Journal of Communicable Diseases (P-ISSN: 0019-5138 & E-ISSN: 2581-351X) Copyright (c) 2021: Author(s). Published by Advanced Research Publicatons Journal of Communicable Diseases Volume 53, Issue 4 - 2021, Pg. No. 36-47 Peer Reviewed & Open Access Journal Corresponding Author: Sanya Aggarwal, Department of Statstcs, Faculty of Mathematcal Sciences, University of Delhi, Delhi, India. E-mail Id: sanya.aggarwal.stats@gmail.com Orcid Id: htps://orcid.org/0000-0003-1177-0708 How to cite this artcle: Grover G, Chakravarty S, Aggarwal S, Deo V. Estmatng Disability Adjusted Life Years using Survival Models in HIV/ AIDS Risk Groups. J Commun Dis. 2021;53(4):36-47. Date of Submission: 2021-09-26 Date of Acceptance: 2021-12-31 I N F O A B S T R A C T Introduction: Advances in human immunodeficiency virus (HIV) treatment have led to greater survival rates and have brought about a shif in the burden of disease from mortality to morbidity. The main purpose of this study is to estmate the Disability Adjusted Life Years (DALYs) of HIV infected patents associated with diferent modes of transmission. Methods: Non-parametric Kaplan-Meier estmate has been utlised to develop survival functon, and the mean residual life model has been utlised to estmate the life expectancy of patents alive at the end of the study. The impact of factors such as age, sex, hepatts B and syphilis on life expectancy has also been assessed by ftng a proportonal mean residual life model. DALYs have been calculated based on the results of both models. Results: Retrospectve tme to event data of HIV patents undergoing Antretroviral Therapy (ART) in Dr Ram Manohar Lohia Hospital, New Delhi, India has been utlised to illustrate the modelling technique. The study suggests that in total, 42300.15 DALYs were lost which includes 39765.10 years of life lost due to premature death and 2535.05 years of life lived with disability. When the covariates were taken into consideraton, 47592.14 DALYs were found to have been lost with an average of 17.64 DALYs lost per patent. Conclusion: Our results suggest that the high-risk groups such as homosexuals and parent to child transmission are a major cause of concern, which are in accordance with the existng natonal policies. Also, we would suggest that gender-based and age-based policies should be incorporated to reduce the burden of disease. Keywords: DALY, HIV/ AIDS, Mode of Transmission, Survival Analysis, Kaplan Meier Model, Mean Residual Life Estimating Disability Adjusted Life Years using Survival Models in HIV/ AIDS Risk Groups Gurprit Grover 1 , Sangeeta Chakravarty 2 , Sanya Aggarwal 1 , Vishal Deo 3 1 Department of Statstcs, Faculty of Mathematcal Sciences, University of Delhi, Delhi, India. 2 Insttute of Economic Growth, Delhi University Enclave, Delhi, India. 3 Department of Statstcs, Ramjas College, University of Delhi, Delhi, India. DOI: htps://doi.org/10.24321/0019.5138.202172