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A Comparative Study of Different Joint Modeling Approaches for HIV/AIDS Patients in Southern Iran
Iranian Journal of Public Health ( IF 1.4 ) Pub Date : 2020-09-02 , DOI: 10.18502/ijph.v49i9.4099
Narges Roustaei 1 , Jamshid Jamali 2 , Seyyed Mohammad Taghi Ayatollahi 3 , Najaf Zare 3
Affiliation  

Acquired Immune Deficiency Syndrome (AIDS) is a chronic disease that can affect various aspects of the people's life. In 2016 approximately 36.7 million people lived with HIV/AIDS worldwide (1). The prevalence of AIDS in Iran in 2014 was estimated 0.14%, and the number of related deaths was 5,530. About 45.7% of HIV infected cases were 25-34 yr old, and the same age group had the highest number of people with AIDS in Iran (2). Due to recent advances in HIV/AIDS treatment, it has transformed from an acute and deadly disease to a manageable chronic condition (3, 4). In patients with HIV-infection, CD4 cell count is the main sign and a strong predictor of disease progression and survival of patients (5, 6). In Abstract Background: The prevalence of HIV/AIDS has been increasing in Iran, especially amongst the young population, recently. The joint model (JM) is a statistical method that represents an effective strategy to incorporate all information of repeated measurements and survival outcomes simultaneously. In many theoretical studies, the population under the study were heterogeneous. This study aimed at comparing three approaches by considering heterogeneity in the patients. Methods: This study was conducted on 750 archived files of patients infected with HIV in Fars Province, southern Iran, from 1994 to 2017. Proposed Approach (PA), Joint Latent Class Models (JLCM), and Separated Approach (SA) were compared to evaluate the influence covariates on the longitudinal and time-to-event outcomes in the heterogeneous HIV/AIDS patients. Results: Gender (P<0.001) and HCV (P<0.01) were two significant covariates in the classification of HIV/AIDS patients. Time had a significant effect on CD4 (P<0.001) in both classes in the three approaches. In PA and SA, females had higher CD4 than males (P<0.001) in the first class. In JLCM, females had higher CD4 than males (P<0.01) in both classes. The patients with higher Hgb had also higher CD4 (P<0.001) in both classes in the three approaches. HCV reduced the CD4 significantly in both classes in PA (P<0.05) and SA (P<0.001). Within the survival sub-model, HCV reduced survival rate significantly in the second class in PA (P<0.05), JLCM (P<0.01) and SA (P<0.001). Conclusion: PA was an appropriate approach for joint modeling longitudinal and survival outcomes for this heterogeneous population.

中文翻译:

伊朗南部 HIV/AIDS 患者不同联合建模方法的比较研究

获得性免疫缺陷综合征(AIDS)是一种慢性疾病,可以影响人们生活的各个方面。2016 年,全世界约有 3670 万人感染了 HIV/AIDS (1)。2014年伊朗的艾滋病患病率估计为0.14%,相关死亡人数为5530人。大约 45.7% 的 HIV 感染病例年龄在 25-34 岁之间,而同一年龄段的伊朗艾滋病患者人数最多(2)。由于 HIV/AIDS 治疗的最新进展,它已从一种急性和致命的疾病转变为一种可控制的慢性病 (3, 4)。在 HIV 感染患者中,CD4 细胞计数是疾病进展和患者存活率的主要标志和强有力的预测指标 (5, 6)。摘要背景:最近,伊朗的艾滋病毒/艾滋病流行率一直在上升,尤其是在年轻人群中。联合模型 (JM) 是一种统计方法,它代表了一种有效策略,可以同时合并重复测量和生存结果的所有信息。在许多理论研究中,所研究的人群是异质的。本研究旨在通过考虑患者的异质性来比较三种方法。方法:本研究对 1994 年至 2017 年伊朗南部法尔斯省感染 HIV 患者的 750 份存档文件进行。将建议方法 (PA)、联合潜在类别模型 (JLCM) 和分离方法 (SA) 与评估对异质 HIV/AIDS 患者纵向和事件发生时间结果的影响协变量。结果:性别(P<0.001)和HCV(P<0.01)是HIV/AIDS患者分类中的两个显着协变量。在这三种方法中,时间对两个类别的 CD4 都有显着影响(P<0.001)。在 PA 和 SA 中,女性在头等舱中的 CD4 高于男性(P<0.001)。在 JLCM 中,两个班级的女性 CD4 均高于男性(P<0.01)。在这三种方法中,Hgb 较高的患者在两个类别中的 CD4 也较高(P<0.001)。HCV 在 PA (P<0.05) 和 SA (P<0.001) 两个类别中均显着降低了 CD4。在生存亚模型中,HCV 显着降低了 PA(P<0.05)、JLCM(P<0.01)和 SA(P<0.001)二类患者的生存率。结论:对于这种异质人群,PA 是联合建模纵向和生存结果的合适方法。001)在头等舱。在 JLCM 中,两个班级的女性 CD4 均高于男性(P<0.01)。在这三种方法中,Hgb 较高的患者在两个类别中的 CD4 也较高(P<0.001)。HCV 在 PA (P<0.05) 和 SA (P<0.001) 两个类别中均显着降低了 CD4。在生存亚模型中,HCV 显着降低了 PA(P<0.05)、JLCM(P<0.01)和 SA(P<0.001)二类患者的生存率。结论:对于这种异质人群,PA 是联合建模纵向和生存结果的合适方法。001)在头等舱。在 JLCM 中,两个班级的女性 CD4 均高于男性(P<0.01)。在这三种方法中,Hgb 较高的患者在两个类别中的 CD4 也较高(P<0.001)。HCV 在 PA (P<0.05) 和 SA (P<0.001) 两个类别中均显着降低了 CD4。在生存亚模型中,HCV 显着降低了 PA(P<0.05)、JLCM(P<0.01)和 SA(P<0.001)二类患者的生存率。结论:对于这种异质人群,PA 是联合建模纵向和生存结果的合适方法。在生存亚模型中,HCV 显着降低了 PA(P<0.05)、JLCM(P<0.01)和 SA(P<0.001)二类患者的生存率。结论:对于这种异质人群,PA 是联合建模纵向和生存结果的合适方法。在生存亚模型中,HCV 显着降低了 PA(P<0.05)、JLCM(P<0.01)和 SA(P<0.001)二类患者的生存率。结论:对于这种异质人群,PA 是联合建模纵向和生存结果的合适方法。
更新日期:2020-09-02
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