Joint Modeling in Determinants of Status of Tuberculosis and CD4 Cell Count among Antiretroviral Therapy Attendant of HIV Infected Adults Follow Up in Gondar Teaching Referral Hospital, Gonder, Ethiopia

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Background: Tuberculosis and human immunodeficiency virus have been closely linked and East Africa is the hardest region hit by tuberculosis and Human immunodeficiency virus including Ethiopia. The main objective of this study was to identify the associated variables with tuberculosis status and CD4 cell count chance of patients jointly in Gonder teaching referral hospital, Gonder, Ethiopia implemented by SAS version 94. Methods: A retrospective cohort study was conducted on AIDS patients whose age greater than 19 years from 1st January, 2018- 30th January, 2020. Generalized linear mixed model was used to identify the factors of CD4 cell count and tuberculosis status of patients separately and jointly. Results: The mean with a standard deviation of weight, and a hemoglobin level of patients were 55.48 (10.21), and 18.25 (33.028) respectively. The baseline characteristics of patients included in this study was the median CD4 count of patients was 378 cells per cubic millimeter of blood. The generalized linear mixed model was well fitted which shows, opportunistic infection, weight and hemoglobin level were significantly associated with log of CD4 cell count and tuberculosis status of patients at 5% level of significance. Conclusion: From this study, hemoglobin level, weight, and opportunistic infection of other disease were statistically significant at a 5% level of significance for the log of CD4 count and TB status of patients jointly. The result of the study shows that the log of CD4 count of patients increased when hemoglobin level and weight of patients increased. In addition, the log of CD4 count of AIDS patients who has other disease is 5.04 more likely to be co-infection than who has no other disease.