Objectives: Implementation of the International Statistical Classification of Disease and
Related Health Problems, 10th Revision (ICD-10) coding system presents challenges for using …

Background: Liver biopsy is an important tool in the management of patients with liver
disease. Because biopsy practices may be changing, we studied patterns of use in a large …

Central retinal vein occlusion (CRVO) is usually seen in older adults and is often associated
with systemic vascular disease. CRVO can be seen in young adults, and although it is …

Background: Although racial and ethnic disparities in health services utilization and outcomes
have been extensively studied in several countries, this issue has received little attention …

BACKGROUND & AIMS: Complications after colectomy for ulcerative colitis (UC) have not
been well characterized in large, population-based studies. We characterized postoperative in…

Background Risk adjustment and mortality prediction in studies of critical care are usually
performed using acuity of illness scores, such as Acute Physiology and Chronic Health …

Background: The pathogenesis of appendicitis is unclear. We evaluated whether exposure
to air pollution was associated with an increased incidence of appendicitis. Methods: We …

The recent epidemiology and outcomes of primary biliary cirrhosis (PBC) in North America
are incompletely described, partly due to difficulties in case ascertainment. In light of their …

Background Expert national/global asthma management recommendations raise the issue
whether a safe threshold of short-acting beta-2 agonist (SABA) use without concomitant …

colon; We performed a retrospective study of 103 cases of central retinal vein occlusion (CRVO)
in young, nondiabetic adults that were followed for at least six months. Of these patients, …