In this paper, we identify 8 methods used to measure errors and adverse events in health
care and discuss their strengths and weaknesses. We focus on the reliability and validity of …

Context: Although patient safety is a major problem, most health care organizations rely on
spontaneous reporting, which detects only a small minority of adverse events. As a result …

Objective: We sought to determine whether hospital variations in surgical mortality were due
to differences in complication rates or failure to rescue rates (ie, case-fatality rates in patients …

Methods: Using 2005 to 2007 Medicare data, we identified patients undergoing 3 high-risk
cancer operations: gastrectomy, pancreatectomy, and esophagectomy. We first ranked …

Importance The American College of Surgeons National Surgical Quality Improvement
Program (ACS NSQIP) provides feedback to hospitals on risk-adjusted outcomes. It is not …

Objective. The goal of this study was to assess the validity of the International Classification
of Disease, 10th Version (ICD‐10) administrative hospital discharge data and to determine …

ContextAlthough medical injuries are recognized as a major hazard in the health care
system, little is known about their impact. ObjectiveTo assess excess length of stay, charges …

Context Although partial nephrectomy is the preferred treatment for many patients with early-
stage kidney cancer, recent clinical trial data, which demonstrate better survival for patients …

Background. The comorbidity variables that constitute the Charlson index are widely used in
health care research using administrative data. However, little is known about the validity of …

Methods: Using the 100% national claims files, we identified all US hospitals performing
coronary artery bypass graft, total hip replacement, abdominal aortic aneurysm repair, or …