Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-11DOI: 10.1136/ebmed-2017-110726
Mario Cazzola, Paola Rogliani
{"title":"In stable COPD, long-acting muscarinic antagonist plus long-acting beta-agonists resulted in less exacerbations, pneumonia and larger improvement in FEV <sub><sub>1</sub></sub> than long-acting beta-agonists plus inhaled corticosteroids.","authors":"Mario Cazzola, Paola Rogliani","doi":"10.1136/ebmed-2017-110726","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110726","url":null,"abstract":"Commentary on: Horita N, Goto A, Shibata Y, et al . Long-acting muscarinic antagonist (LAMA) plus long-acting beta-agonist (LABA) versus LABA plus inhaled corticosteroid (ICS) for stable chronic obstructive pulmonary disease (COPD). Cochrane Database Syst Rev 2017;2:CD012066.\u0000\u0000The Global Initiative for Chronic Obstrictove Lung Disease 2017 report recommends the use of long-acting muscarinic antagonist (LAMA) + long-acting beta-agonist (LABA), or alternatively LABA + inhaled corticosteroid (ICS), in patients with chronic obstructive pulmonary disease (COPD) at risk of exacerbations regardless of the entity of symptoms.1 However, it does not specify whether it is preferable to start with LAMA+LABA rather than LABA+ICS. In fact, no firm conclusions can be drawn from the current literature.\u0000\u0000The aim of this study was to compare the benefits and harms of LAMA+LABA versus LABA+ICS in the treatment of COPD. The authors conducted a meta-analysis of studies published up to June 2016, including individual randomised controlled trials, parallel-group trials and crossover trials …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35260722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-29DOI: 10.1136/ebmed-2017-110802
Andrea Messori, Sabrina Trippoli, Claudio Marinai
{"title":"Effectiveness of interventions based on implantable devices: meta-analyses or systematic reviews that fail to indicate which device brands were used.","authors":"Andrea Messori, Sabrina Trippoli, Claudio Marinai","doi":"10.1136/ebmed-2017-110802","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110802","url":null,"abstract":"We recently surveyed the literature on the effectiveness of three classes of implantable devices: (1) stents for carotid artery stenosis, (2) endovascular clips or coils for unruptured intracranial aneurysms and (3) prostheses for endovascular treatment of ruptured abdominal aneurysms. These three device-based interventions were selected because, at our Regional Health System, we were requested to undertake a series of competitive tenders for the procurement of these devices.\u0000\u0000To synthetise the clinical literature on these topics, we adopted the empirical criterion of identifying—by expert consensus—the ‘best’ single meta-analysis …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110802","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35455834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-17DOI: 10.1136/ebmed-2017-110775
Ewelina Rogozińska, Nadine Marlin, Shakila Thangaratinam, Khalid S Khan, Javier Zamora
{"title":"Meta-analysis using individual participant data from randomised trials: opportunities and limitations created by access to raw data.","authors":"Ewelina Rogozińska, Nadine Marlin, Shakila Thangaratinam, Khalid S Khan, Javier Zamora","doi":"10.1136/ebmed-2017-110775","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110775","url":null,"abstract":"<p><p>Meta-analysis based on individual participant data (IPD), often described as the 'gold standard' for effectiveness evidence synthesis, is increasingly being deployed despite being more resource intensive than collating study-level results. Its professed virtues include the ability to incorporate unreported data and to standardise variables and their definitions across trials. In reality, the unreported data, although present in shared datasets, might still not be usable in the analysis. The characteristics of trial participants and their outcomes may be too diversely captured for harmonisation and too time and resource consuming to standardise. Embarking on an IPD meta-analysis can lead to unanticipated challenges which ought to be handled with pragmatism. The aim of this article is to discuss the opportunities created by access to IPD and the practical limitations placed on such meta-analyses, using an international IPD meta-analysis of trials on the effect of lifestyle interventions in pregnancy as an example. Despite the increasing uptake of IPD meta-analysis, they encounter old problems shared by other research methods. When embarking on IPD meta-analysis, it is essential to evaluate the trade-offs between the ambitions, and what is achievable due to constraints imposed by the condition of collected IPD. Furthermore, incorporation of aggregate data from trials where IPD was not available should be a mandatory sensitivity analysis that makes the evidence synthesis up-to-date.</p>","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110775","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35279451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-17DOI: 10.1136/ebmed-2016-110585
Sarah D de Ferranti, Radley C Sheldrick
{"title":"USPSTF is unable to recommend for or against lipid screening to identify multifactorial dyslipidaemia in childhood: no recommendation is not without consequences.","authors":"Sarah D de Ferranti, Radley C Sheldrick","doi":"10.1136/ebmed-2016-110585","DOIUrl":"https://doi.org/10.1136/ebmed-2016-110585","url":null,"abstract":"<p><p>Paediatric lipid screening has been recommended for decades to identify youth at increased risk for early atherosclerotic disease but is controversial and not universally adopted. A 2016 review by the US Preventive Services Task Force (USPSTF) found inadequate evidence to recommend for or against lipid screening in childhood. In this Perspective article, we examine this controversial and important topic more broadly. We consider whether the USPSTF framework is asking the right questions, and whether the answers to these questions should be valued equally, whether the USPSTF questions are answerable and by what types of evidence and whether the burden of proof is appropriate. We argue that using a broader framework that includes the magnitude of potential benefits and harms, considering more types of evidence beyond randomised controlled trials, and more fully incorporating patient and parent perspectives could lead to more practical and more widely applicable guidance for practitioners, guide future research priorities and be more inclusive of patient priorities.</p>","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2016-110585","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35279454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-26DOI: 10.1136/ebmed-2017-110791
Robert S Rosenson
{"title":"CETP inhibition improves the lipid profile but has no effect on clinical cardiovascular outcomes in high-risk patients.","authors":"Robert S Rosenson","doi":"10.1136/ebmed-2017-110791","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110791","url":null,"abstract":"Commentary on: Lincoff AM, Nicholls SJ, Riesmeyer JS, et al . Evacetrapib and cardiovascular outcomes in high-risk vascular disease. N Engl J Med 2017;376:1933–42.\u0000\u0000High-density lipoprotein (HDL) cholesterol (HDL-C) is a robust predictor of cardiovascular disease (CVD) events; however, research into both rare monogenic HDL disorders and Mendelian randomisation studies of dysfunctional traits associated with HDL-C demonstrate that this biomarker is not involved in the causal pathway for atherosclerosis.1 Small-effect variants in the gene encoding cholesteryl ester transfer protein (CETP) associate with higher HDL-C and lower myocardial infarction rates, whereas large-effect variants associate with reduced survival. CETP loss-of-function variants also associate with low levels of low-density lipoprotein (LDL) cholesterol (LDL-C), which confounds the attribution of the atheroprotective effect of CETP-mediated HDL changes.\u0000\u0000Small molecules that inhibit CETP activity have been previously investigated in two randomised clinical trials of CVD outcomes.2 3 Treatment with torcetrapib, in combination with atorvastatin increased HDL-C …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110791","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35449387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-07-17DOI: 10.1136/ebmed-2017-110742
Colm P Travers, Waldemar A Carlo
{"title":"Antenatal corticosteroid administration between 24 hours and 7 days before extremely preterm delivery is associated with the lowest rate of mortality.","authors":"Colm P Travers, Waldemar A Carlo","doi":"10.1136/ebmed-2017-110742","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110742","url":null,"abstract":"Commentary on: Norberg H, Kowalski J, Marsal K, et al. Timing of antenatal corticosteroid administration and survival in extremely preterm infants: a national population-based cohort study. BJOG 2017. doi: 10.1111/1471-0528.14545. [Epub ahead of print 15 March 2017].\u0000\u0000Antenatal corticosteroids (ACS) reduce mortality in preterm infants.1 The association between timing of ACS and outcomes among extremely preterm infants has been sparsely investigated. In a recent large retrospective cohort study, higher odds for severe neonatal morbidity or mortality were seen in infants born at 24–33 weeks gestation with an administration-to-birth interval of ACS 7 days compared with 1–7 days.2 The objective of this study was to investigate the impact of ACS administration-to-birth interval on survival among extremely preterm infants.\u0000\u0000This population-based cohort study used data collected prospectively …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110742","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35176155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-30DOI: 10.1136/ebmed-2017-110761
Donald Dudley
{"title":"Serial transvaginal cervical length measurements and quantitative vaginal fetal fibronectin concentrations did not predict spontaneous preterm birth in low-risk nulliparous women.","authors":"Donald Dudley","doi":"10.1136/ebmed-2017-110761","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110761","url":null,"abstract":"Commentary on: Esplin MS, Elovitz MA, Iams JD, et al . Predictive accuracy of serial transvaginal cervical lengths and quantitative vaginal fetal fibronectin levels for spontaneous preterm birth among nulliparous women. JAMA 2017;317:1047–1056.\u0000\u0000Approximately 10% of pregnancies in the USA are delivered preterm, with two-thirds being spontaneous.1 While the single greatest risk factor for preterm birth (PTB) is a history of PTB, about 40% of pregnancies occur in nulliparous women. Identifying nulliparas who are most at risk for spontaneous PTB would allow for new approaches to lower the PTB rate. Two strategies have been promoted to identify women at high risk for PTB, including serial cervical length (CL) measurements and quantitative fetal fibronectin (FFN) concentrations. A short cervix has been shown to place women with a prior PTB at high risk for subsequent PTB …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110761","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35457613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-07-29DOI: 10.1136/ebmed-2017-110753
Christopher de Gara, Vanessa Falk
{"title":"Over half of the patients who undergo adjustable gastric banding may require revision bariatric surgery.","authors":"Christopher de Gara, Vanessa Falk","doi":"10.1136/ebmed-2017-110753","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110753","url":null,"abstract":"Commentary on : Lazzati A, De Antonio M, Paolino L, et al . Natural history of adjustable gastric banding: lifespan and revisional rate. A nationwide study on administrative data on 53,000 patients. Ann Surg 2017;265:439–445.\u0000\u0000Worldwide obesity and its consequences are increasing at alarming rates.1 The only long-term proven treatment for obesity and its comorbidities is bariatric surgery.2 In 2008, the adjustable gastric band (AGB) was the most commonly performed bariatric procedure.3 Its early low complication rate and technically easy learning curve made it very popular; however, long-term complications have dogged this operation. Additionally, weight recidivism has led to band removal in 50% of patients4. This large French national retrospective study of prospectively collected data examines AGB survival and revision rates after …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110753","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35365912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-07-12DOI: 10.1136/ebmed-2017-110756
Jessica L Roberts, Ravi M Patel
{"title":"Antibiotic utilisation in very low birth weight infants without sepsis or necrotising enterocolitis is associated with multiple adverse outcomes.","authors":"Jessica L Roberts, Ravi M Patel","doi":"10.1136/ebmed-2017-110756","DOIUrl":"https://doi.org/10.1136/ebmed-2017-110756","url":null,"abstract":"Commentary on: Ting JY, Synnes A, Roberts A, et al . Association Between Antibiotic Use and Neonatal Mortality and Morbidities in Very Low-Birth-Weight Infants Without Culture-Proven Sepsis or Necrotizing Enterocolitis. JAMA Pediatr . 2016;170:1181–1187.\u0000\u0000Concerns about antibiotic overuse have been raised since the 1940s, largely driven by worries about antibiotic resistance and the limited development pipeline for new antimicrobials.1 More recently, prolonged antibiotic exposure has been associated with adverse outcomes in preterm infants, including sepsis, necrotising enterocolitis and mortality.2 3 Paralleling these findings has been the rapid increase in our knowledge of the importance of the gut microbiome in health and disease,4 one that is substantially altered in infancy by antimicrobial exposure.5 Understanding the relationship between antimicrobial …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2017-110756","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35162933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Evidence-Based MedicinePub Date : 2017-10-01Epub Date: 2017-08-03DOI: 10.1136/ebmed-2016-110527
Udho Thadani
{"title":"Routine invasive strategies compared with conservative strategies do not lower the all-cause mortality in patients with non-ST elevation myocardial infarction and unstable angina.","authors":"Udho Thadani","doi":"10.1136/ebmed-2016-110527","DOIUrl":"https://doi.org/10.1136/ebmed-2016-110527","url":null,"abstract":"Commentary on: Fanning JP, Nyong J, Scott IA, et al . Routine invasive strategies versus selective invasive strategies for unstable angina and non-ST elevation myocardial infarction in the stent era. Cochrane Database Syst Rev 2016:CD004815.\u0000\u0000Urgent coronary artery revascularisation with stents following an acute ST elevation myocardial infarction (MI) reduces mortality and the incidence of reinfarction. Current guidelines recommend the use of routine invasive strategies (RINVS) in patients with an acute non-ST elevation (NSTE) MI and in those with unstable angina (UA) with high-risk features. However, these guidelines are not necessarily evidence-based, and concern remains whether the RINVS is indeed superior to a selective invasive strategy (SINVS). This review and meta-analysis compares the benefits and harms associated with RINVS, in the stent era, with or without the use of glycoprotein (GP) IIb/IIIa receptor antagonists, with SINVS in patients with …","PeriodicalId":12182,"journal":{"name":"Evidence-Based Medicine","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/ebmed-2016-110527","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"35290352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}