Instrumental variable approachIn our study (doi:10.1136/bmj.n156), we used a novel set of methods to combine evidence from previously reported randomized trials that share a common biological…
AbstractObjectiveTo evaluate trials of drugs that target amyloid to determine whether reductions in amyloid levels are likely to improve cognition.DesignInstrumental variable meta-analysis.Setting14…
There is longstanding reluctance to use the treaty powers of the World Health Organization. They have been used only once—for the adoption of the WHO Framework […]
Almost 14% of people in England now have evidence of antibodies against SARS-CoV-2, according to the fifth round of the Real-time assessment of community transmission (React-2) […]