Multi-state Markov Model for time to treatment changes for HIV/AIDS patients: A retrospective cohort national datasets, Ethiopia

Author:

Kumsa Tsegaye Hailu1,Mulu Andargachew2,Beyene Joseph3,Asfaw Zeytu Gashaw4

Affiliation:

1. Hawassa University

2. The Armauer Hansen Research Institute (AHRI)

3. McMaster University

4. Addis Ababa University

Abstract

Abstract Background Virological failure, drug resistance, toxicities, and other issues make it difficult for ART to maintain long-term sustainability. These issues would force a modification in the patient's treatment plan. The aim of the current study was to evaluate the durability first line treatment and reasons of early treatment modification of the patient. Methods A retrospective cohort study was conducted from October, 2019 - March, 2020 across all regional states including Addis Ababa and Dire Dawa administrative cities. This study adopted a multi-state Markov model for time to treatment change/switch obtained from 33716 patients. We estimated the transition probability, prediction probabilities and length of stay and factor associated with treatment modification of patients to move from one regimen to another. Results Any of the six therapy combinations (14.4%) altered their treatment at least once during the follow-up period for a variety of reasons. Of the patients, 4,834 (13.26%) changed their treatments just once, while 371 (1.1%) changed it more than once. For 38.6% of the time, a treatment change was undertaken due to toxicity, another infection or comorbidity, or another factor, followed by New drugs were then made accessible and other factors 18.3% of the time, a drug was out of supply; 2.6% of those instances involved pregnancy; and 43.1% involved something else. Highly active anti-retroviral therapy (HAART) combinations TDF + 3TC + NVP, d4T + 3TC + NVP, and TDF + 3TC + EFV were high to treatment alterations in all reasons of treatment modifications, with 29.74%, 26.52%, and 19.52% treatment changes, respectively. Early treatment modification or regime change is one of the treatment combinations that include the d4T medication that creates major concern. The likelihood of staying and moving at the the start of s = 0 and 30-month transitions increased, but the likelihood of staying were declined. For this cohort dataset, the presence of opportunistic disease, low body weight, baseline CD4 count, and baseline TB positive were risk factors for therapy adjustment. Conclusion Given that the current study took into account a national dataset, it provides a solid basis for ART drug status and management. The patient had a higher likelihood of adjusting their treatment at some point during the follow-up period due to drug toxicity, comorbidity, drug not being available, and other factors, according to the prediction probability once more. Baseline TB positivity, low CD4 count, opportunistic disease, and low body weight were risk factors for therapy adjustment in this cohort dataset.

Publisher

Research Square Platform LLC

Reference30 articles.

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5. Prevalence and correlates of first line Antiretroviral therapy change among adult HIV patients attending HIV care and treatment services in north western rural part of Tanzania: a cross sectional study;Gunda DW;Tanzan Med J,2017

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