Johann Steurer

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OBJECTIVE To summarise the evidence on accuracy of the Ottawa ankle rules, a decision aid for excluding fractures of the ankle and mid-foot. DESIGN Systematic review. DATA SOURCES Electronic databases, reference lists of included studies, and experts. REVIEW METHODS Data were extracted on the study population, the type of Ottawa ankle rules used, and(More)
BACKGROUND Pulmonary rehabilitation has become a cornerstone in the management of patients with stable Chronic Obstructive Pulmonary Disease (COPD). Systematic reviews have shown large and important clinical effects of pulmonary rehabilitation in these patients. In unstable COPD patients who have suffered from an exacerbation recently, however, the effects(More)
PURPOSE The number of operations to reach a plateau phase in colorectal laparoscopic surgery is still under debate. There are few publications reporting on multidimensional assessment of the learning curve, including operation time and complication and conversion rates. The purpose of this study was to define a multidimensional learning curve for sigmoid(More)
BACKGROUND Beside symptoms and clinical signs radiological findings are crucial in the diagnosis of lumbar spinal stenosis (LSS). We investigate which quantitative radiological signs are described in the literature and which radiological criteria are used to establish inclusion criteria in clinical studies evaluating different treatments in patients with(More)
The role of N-acetylcysteine (NAC) in the treatment of chronic bronchitis is unclear. Since a number of studies have been published on this topic, a systematic review of published studies seems justified. A systematic search (Medline, Embase, Cochrane Library, bibliographies, no language restriction) for published randomized trials comparing oral NAC with(More)
OBJECTIVE To assess the accuracy and effectiveness of the screening of all newborn infants for developmental dysplasia of the hip (DDH) using ultrasound imaging, as is standard practice in some European countries but not in the United Kingdom, the United States, or Scandinavia. DESIGN Systematic review. DATA SOURCES Twenty three medical, economic, and(More)
BACKGROUND Uncertainty exists about the performance of the Framingham risk score when applied in different populations. OBJECTIVE We assessed calibration of the Framingham risk score (ie, relationship between predicted and observed coronary event rates) in US and non-US populations free of cardiovascular disease. METHODS We reviewed studies that(More)
OBJECTIVE To assess the extent to which different forms of summarising diagnostic test information influence general practitioners' ability to estimate disease probabilities. DESIGN Controlled questionnaire study. SETTING Three Swiss conferences in continuous medical education. PARTICIPANTS 263 general practitioners. INTERVENTION Questionnaire with(More)
OBJECTIVE The objective of our study was to perform a systematic review of the semiquantitative and qualitative radiologic criteria that are used for the diagnosis of lumbar spinal stenosis (LSS). MATERIALS AND METHODS A four-step systematic literature search including the MEDLINE database was performed by an experienced librarian to reveal all(More)
CONTEXT Magnetic resonance imaging (MRI) combined with magnetic resonance spectroscopy imaging (MRSI) emerged as a promising test in the diagnosis of prostate cancer and showed encouraging results. OBJECTIVE The aim of this systematic review is to meta-analyse the diagnostic accuracy of combined MRI/MRSI in prostate cancer and to explore risk profiles(More)