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Sanjib Choudhury,Bhupendra Kumar Singh 한국통계학회 2012 Journal of the Korean Statistical Society Vol.41 No.2
In this paper, a chain ratio–product type estimators has been developed for estimating population mean of the study variable using two auxiliary variables under double sampling scheme, when the information on another additional auxiliary character is available along with the main auxiliary character. The optimum property of the proposed strategy has been identified in two different cases with their variances. Theoretical and empirical studies have been done to demonstrate the efficiency of the proposed estimator over other estimators, which utilized the information on two auxiliary characteristics.
Sundar Kaushik,Paulraj Sabharisundarvel,Choudhury Shuvro Roy,Hassan Haseeb,Sengupta Judhajit,Pattari Sanjib Kumar 대한신경중재치료의학회 2021 Neurointervention Vol.16 No.1
Cerebral venous thrombosis (CVT) is a rare clinical entity, with clinical presentations extending from headache and seizures to coma and death. For adults developing progressive neurological worsening despite adequate medical management, endovascular thrombolysis and/or mechanical thrombectomy may be considered as treatment options. We present one such patient with CVT who developed seizures and slipped into a coma, despite best medical management. A large-bore aspiration catheter was used as a standalone system for the endovascular procedure. The venous sinuses were successfully re-canalized. The patient was discharged a week later with a modified Rankin scale of 2. Studies show that endovascular thrombolysis used alone or in conjunction with thrombectomy for CVT has a higher risk of hemorrhagic complications. If we were to use mechanical thrombectomy devices (that are specifically designed for intracranial clot retrieval) as a stand-alone system, we would probably have better clinical outcomes with a lower risk of hemorrhagic complications.