Acetazolamide is used to prevent acute mountain sickness (AMS). We assessed efficacy and harm of acetazolamide for the prevention of AMS, and tested for dose-responsiveness. We systematically searched electronic databases (until April 2011) for randomized trials comparing acetazolamide with placebo for the prevention of AMS. For each dose, risk ratios were aggregated using a Mantel-Haenszel fix...

OBJECTIVE The reasons that doctors may refuse or be reluctant to treat have not been widely explored in the medical literature. To understand the ethical implications of reluctance to treat there is a need to recognise the constraints of doctors working in complex systems and to consider how these constraints may influence reluctance. The aim of this paper is to illustrate these constraints usi...

OBJECTIVE To determine whether poor reporting of methods in randomised controlled trials reflects on poor methods. DESIGN Observational study. SETTING Reports of randomised controlled trials conducted by the Radiation Therapy Oncology Group since its establishment in 1968. PARTICIPANTS The Radiation Therapy Oncology Group. Outcome measures Content of reports compared with the design featu...

BACKGROUND The few existing studies on herpes labialis among health care workers have been predominantly among non-dental health care workers. The purpose of this study was to determine Nigerian dental health care providers' knowledge of, attitudes toward, preventive behaviors for, and refusal to treat patients with herpes labialis. METHODS This cross-sectional study was conducted among final...