BACKGROUND In this study, we examined the association between American Society of Anesthesiologists Physical Status (ASA PS) designation and 48-h mortality for both elective and emergent procedures in a large contemporary dataset (patient encounters between 2009 and 2014) and compared this association with data from a landmark study published by Vacanti et al. in 1970. METHODS Patient history...

OBJECTIVE Some studies suggest a higher case fatality from colorectal cancer (CRC) in psychiatric patients even though the incidence is no greater than in the general population. However, this finding is not universal and may be confounded by study design (for example, inception, compared with historical, cohort), mean cohort age, or delays in presentation with more advanced staging at diagnosi...

  Background: Sulfur mustard (SM) has acute and chronic effects on skin and mucosal surfaces. The aim of the study was to evaluate the frequency of esophagitis in a historical cohort of veterans who had been exposed to SM in Iran-Iraq war nearly 25 years ago.   Methods : One hundred two veterans with dyspepsia and/or heartburn underwent esophago-gastro-duodenoscopy. Of them, 52 cases had been e...

background: sulfur mustard (sm) has acute and chronic effects on skin and mucosal surfaces. the aim of the study was to evaluate the frequency of esophagitis in a historical cohort of veterans who had been exposed to sm in iran-iraq war nearly 25 years ago.   methods : one hundred two veterans with dyspepsia and/or heartburn underwent esophago-gastro-duodenoscopy. of them, 52 cases had been exp...

BACKGROUND Readmissions after hospital discharge are a common occurrence and are costly for both hospitals and patients. Previous attempts to create universal risk prediction models for readmission have not met with success. In this study we leveraged a comprehensive electronic health record to create readmission-risk models that were institution- and patient- specific in an attempt to improve ...

Most explanations of the increase in life expectancy at older ages over history emphasize the importance of medical and public health factors of a particular historical period. We propose that the reduction in lifetime exposure to infectious diseases and other sources of inflammation--a cohort mechanism--has also made an important contribution to the historical decline in old-age mortality. Ana...

This paper introduces the idea of a non-kinship-based Universal-family firm, an organizational form we developed based on interpreting historical writings in their socio-economic context. We analyzed Luke’s gospel with an eye toward drawing implications for the stewardship-agency debate in the contemporary family business literature. Our paper makes contributions at two important levels. In add...

For quantitative determination of lignin, we have invasive (gravimetric determination i. e. ASTM, TAPPI, SCAN) and non-invasive methods on our disposal. Invasive methods are not suitable for historical documents. On the other hand, several spectroscopic techniques are in use, based on IR and UV spectroscopy. The absorption of light of λ > 300 310 nm by pure cellulose is minimal and most UVspect...

Patients with ESRD commonly experience secondary hyperparathyroidism, a condition primarily managed with activated injectable vitamin D. The biologic effects of vitamin D, however, are widespread, and it is possible that activated injectable vitamin D alters survival in ESRD. This hypothesis was tested in a historical cohort study of incident hemodialysis patients who lived throughout the Unite...

OBJECTIVES To describe the uptake of 2009 A/H1N1 influenza vaccination among pregnant women and determine if vaccination was associated with adverse pregnancy outcomes. STUDY DESIGN A historical cohort study was performed using booking, delivery suite and neonatal unit discharge records from the Coombe Women and Infants University Hospital, Dublin, Ireland. Singleton deliveries to women pregn...