Background Acute exposure to air pollution has been linked to myocardial infarction, but its
effect on heart failure is uncertain. We did a systematic review and meta-analysis to assess …

OBJECTIVE: Large health care utilization databases are frequently used in variety of
settings to study the use and outcomes of therapeutics. Their size allows the study of …

Importance Epidemiologic evidence regarding the importance of traumatic brain injury (TBI)
as a risk factor for dementia is conflicting. Few previous studies have used patients with non …

Background: The aim of this study was to determine the validity of acute myocardial
infarction (AMI) diagnosis coding in the National Health Insurance Research Database …

Background: Recent publications suggest that arthroscopic and open rotator cuff repairs
have had comparable clinical results, although each technique has distinct advantages and …

Abstract Objective The National Health Insurance Research Database (NHIRD) is commonly
used for pharmacoepidemiological research in Taiwan. This study evaluated the validity of …

Background Although numerous studies suggest that there is an inverse relation between
hospital volume of surgical procedures and surgical mortality, the relative importance of …

ContextEvidence on the health risks associated with short-term exposure to fine particles
(particulate matter≤ 2.5 μm in aerodynamic diameter [PM2. 5]) is limited. Results from the …

Background Although the relation between hospital volume and surgical mortality is well
established, for most procedures, the relative importance of the experience of the operating …

Objective: To determine whether the relationship between hospital volume and mortality has
changed over time. Background: It is generally accepted that hospital volume is associated …