Background The Charlson comorbidity index is often used to control for confounding in
research based on medical databases. There are few studies of the accuracy of the codes …

Routinely collected health data, obtained for administrative and clinical purposes without
specific a priori research goals, are increasingly used for research. The rapid evolution and …

Background Coronary artery bypass grafting (CABG) is the standard treatment for revascularisation
in patients with left main coronary artery disease, but use of percutaneous coronary …

Background. There are concerns about highly active antiretroviral therapy (HAART) causing
a progressive increase in the risk of ischemic heart disease. We examined this issue in a …

OBJECTIVE—To examine whether diabetes is a risk factor for hospitalization with pneumonia
and to assess the impact of A1C level on such risk. RESEARCH DESIGN AND METHODS…

OBJECTIVE—We sought to examine whether type 2 diabetes increases risk of death and
complications following pneumonia and to assess the prognostic value of admission …

Aims Remote ischaemic conditioning as an adjunct to primary percutaneous coronary
intervention in patients with ST-elevation myocardial infarction increases myocardial salvage. We …

In pharmacoepidemiology, routinely collected data from electronic health records (including
primary care databases, registries, and administrative healthcare claims) are a resource for …

Background It remains uncertain if the excess cardiovascular risk of rofecoxib and celecoxib
reported in clinical trials is present in routine practice and whether the use of other …

Background Recommendations for venous thromboembolism (VTE) prophylaxis in patients
with inflammatory bowel disease (IBD) can be refined by incorporating patient-specific risk …