Journal of Biostatistics and Epidemiology، جلد ۷، شماره ۳، صفحات ۲۳۵-۲۴۳
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عنوان انگلیسی Survival Analysis of Patients with Brain Stroke in the Presence of Competing Risks: A Weibull Parametric Model
چکیده انگلیسی مقاله Introduction: This study aimed to assess the association between the survival of patients and outcomes in Brain Stroke (BS) in the presence of competing risks utilizing a Weibull parametric model.  Methods: In this longitudinal study, 332 patients with BS were attended from Imam Khomeini Hospital in Ardabil, Iran. The stroke was diagnosed according to the medical history, current symptoms, and brain imaging during June 2008 and 2018. The survival of the patients, as the primary outcome, was modeled utilizing the best-chosen Weibull model in the presence of competing risks, including stroke and other factors (heart disease, blood pressure, etc.).  Results: Older age at diagnosis (59-68 years: hazard ratio [HR]=2.27; 90% confidence interval [CI]: 1.65 to 3.12; 69-75 years: HR=4.79; 95% CI: 3.56 to 6.44; ≥76 years: HR, 4.92; 95% CI: 3.55 to 6.80), being a male (HR, 1.39; 95% CI: 1.11 to 1.75), being unemployed (HR, 1.44; 95% CI: 1.39 to 1.82), having heart disease (HR, 1.68; 95% CI: 1.38 to 2.06), and hemorrhagic stroke (HR, 2.21; 95% CI: 1.378to 2.75) were directly related to death from BS. Older age at diagnosis (59-68 years: HR, 18.01; 90% CI, 5.33 to 64.92; 75-69 years: HR, 18.56; 95% CI: 6.97 to 86.57; ≥76 years: HR, 28.90; 95% CI: 15.77 to 218.49), and urban residence (HR, 0.46; 90% CI, 0.28 to 0.77) were directly related to death from other causes. Conclusion: The recognition of the influential factors on the mortality of BS patients can allow increasing their survival. 
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نویسندگان مقاله | Solmaz Norouzi
Department of Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran


| Ramazan Fallah
Department of Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran


| Seyed Morteza Shamshirgaran
Department of Statistics and Epidemiology, School of Health Sciences, University of Neyshabur, Neyshabur, Iran.


| Farshid Farzipoor
Department of Health Education and Promotion, School of Health, Tabriz University of Medical Sciences, Tabriz, Iran.


| Mohammad Asghari Jafarabadi
Department of Statistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran , Center for the Development of Interdisciplinary Research in Islamic Sciences, and Health Sciences Tabriz University of Medical Sciences, Tabriz, Iran.
نشانی اینترنتی https://jbe.tums.ac.ir/index.php/jbe/article/view/472
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