BMJ : British medical journal
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Review Meta Analysis
Angiotensin receptor blockers and risk of myocardial infarction: meta-analyses and trial sequential analyses of 147 020 patients from randomised trials.
To evaluate the cardiovascular outcomes and other outcomes associated with angiotensin receptor blockers. ⋯ This large and comprehensive analysis produced firm evidence to refute the hypothesis that angiotensin receptor blockers increase the risk of myocardial infarction (ruling out even a 0.3% absolute increase). Compared with controls, angiotensin receptor blockers reduce the risk of stroke, heart failure, and new onset diabetes.
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To assess the impact of the 2009 A/H1N1 influenza pandemic in England during the two waves of activity up to end of February 2010 by estimating the probabilities of cases leading to severe events and the proportion of the population infected. ⋯ This study suggests a mild pandemic, characterised by case and infection severity ratios increasing between waves. Results suggest low ascertainment rates, highlighting the importance of systems enabling early robust estimation of severity, to inform optimal public health responses, particularly in light of the apparent resurgence of the 2009 A/H1N1 strain in the 2010-11 influenza season.
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Randomized Controlled Trial Multicenter Study Comparative Study
Oxytocin bolus versus oxytocin bolus and infusion for control of blood loss at elective caesarean section: double blind, placebo controlled, randomised trial.
To determine the effects of adding an oxytocin infusion to bolus oxytocin on blood loss at elective caesarean section. ⋯ The addition of an oxytocin infusion after caesarean delivery reduces the need for additional uterotonic agents but does not affect the overall occurrence of major obstetric haemorrhage. Trial Registration Current Controlled Trials ISRCTN17813715.
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Randomized Controlled Trial
Rapid versus standard intravenous rehydration in paediatric gastroenteritis: pragmatic blinded randomised clinical trial.
To determine if rapid rather than standard intravenous rehydration results in improved hydration and clinical outcomes when administered to children with gastroenteritis. ⋯ There are no relevant clinical benefits from the administration of rapid rather than standard intravenous rehydration to haemodynamically stable children deemed to require intravenous rehydration. Trail registration Clinical Trials NCT00392145.
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To investigate the impact of industry funding on reporting of subgroup analyses in randomised controlled trials. ⋯ Industry funded randomised controlled trials, in the absence of statistically significant primary outcomes, are more likely to report subgroup analyses than non-industry funded trials. Industry funded trials less frequently prespecify subgroup hypotheses and less frequently test for interaction than non-industry funded trials. Subgroup analyses from industry funded trials with negative results for the primary outcome should be viewed with caution.