Within Medicare, the Medicare Advantage program has historically attracted better risks-healthier, lower-cost patients-than has traditional Medicare. The disproportionate enrollment of lower-cost patients and avoidance of higher-cost ones during the 1990s-known as favorable selection-resulted in Medicare's spending more per beneficiary who enrolled in Medicare Advantage than if the enrollee had...

Background: The initial reports of an outbreak of SARS-CoV-2 pneumonia suggest that COVID-19 is associated with severe disease. Objective: We aimed to describe the clinical parameters and mortality of patients with SARS-CoV-2 pneumonia admitted to intensive care Unit (ICU) of Velayat Hospital in Qazvin, Iran. Materials and methods: In this single-centered, cross-sectional and retrospective st...

from march 1990 to may 1993,309 patients underwent redo cardiac surgery operation at the shahid rajai heart hospital in tehran. early mortality rates in these patients showed a significant increase in comparison to patients undergoing open heart surgery for the first time. late mortality (at least one month after surgery) in the patients was slightly increased also but less than early mortality...

This study was conducted to monitor the rate of inpatient mortality and its associated factors following open reconstruction of abdominal aortic aneurysm (AAA) in a tertiary hospital in Tehran, Iran. This retrospective study was a chart review of 112 patients undergoing open in­frarenal abdominal aortic aneurysm surgery in one of the main tertiary hospitals in Tehran, Iran. Baseline data (d...

background:  gender  difference  has  been   reported  in stroke  risk factors  and  disease  history. the aim  of this study  was  to  compare  risk factors  and  the  severity  of ischemic stroke based  upon  modified rankin scale (mrs) and hospital mortality between two genders. methods: in a  cross-sectional  study, 341  patients  (44% males and 56% females with a mean age of 68.94 ± 12.74 ...