Systematic reviews and observational studies
Cancer and central nervous system disorders: protocol for an umbrella review of systematic reviews and updated meta-analyses of observational studies
... of systematic reviews and conduct updated meta-analyses of observational studies (cohort and case-control) investigating the association between central nervous system disorders and the risk ...
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COSMOS-E: Guidance on conducting systematic reviews and meta-analyses of observational studies of etiology.
... all studies, for a subgroup of studies, or not appropriate at ...biased studies will produce equally biased combined estimates with narrow confidence intervals that may wrongly be interpreted as ...
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Systematic reviews of observational studies of risk of thrombosis and bleeding in urological surgery (ROTBUS): introduction and methodology
... For studies that did not report VTE estimates using these intervals, we modeled estimates—based on a literature search (Additional file 3)—using large-scale population- based studies (Amin, Beral, and ...
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Vitamin D and multiple health outcomes: umbrella review of systematic reviews and meta analyses of observational studies and randomised trials
... Genuine differences between these two designs might be due to confounding or biases that operate in observational studies. Alternatively, difficulties in relation to randomised controlled trials of vitamin ...
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Methodological quality of systematic reviews of animal studies: a survey of reviews of basic research
... of reviews of bench studies as our comparison ...of reviews of bench studies, so some might argue that reviews of human studies could have served as a better ...of reviews ...
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Identifying quasi-experimental studies to inform systematic reviews
... publication types to identify non-RCT designs, text words must be used, which will not necessarily describe methodological aspects of the design. They used terms such as ‘change*’, ‘evaluat*’ and ‘reviewed’ in ...
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[Accepted Manuscript] Systematic review of reviews of observational studies of school-level effects on sexual health, violence and substance use.
... time, studies have examined a broad range of school characteristics as determinants of health risks, behaviour and academic ...existing systematic reviews in this area have a narrow scope, for ...
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Can AMSTAR also be applied to systematic reviews of non randomized studies?
... In general, there is much heterogeneity in methods ap- plied in observational studies [22]. To account for con- founding and bias regression models are used often. However, it has been debated that they are ...
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Automated screening of research studies for systematic reviews using study characteristics
... Due to limited currently available data, and limited re- sources in generating such data, we have made second- ary use of data already available to us from a previous study conducted in our group [10]. The fact that the ...
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Preventing childhood scalds within the home: overview of systematic reviews and a systematic review of primary studies
... included systematic reviews, meta-analyses, randomised controlled trials (RCT), non-randomised controlled trials (NRCT), controlled before-after studies (CBA) and controlled observational ...
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Preventing childhood scalds within the home: overview of systematic reviews and a systematic review of primary studies
... included systematic reviews, meta-analyses, randomised controlled trials (RCT), non-randomised controlled trials (NRCT), controlled before-after studies (CBA) and controlled observational ...
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Drug Utilization on Neonatal Wards: A Systematic Review of Observational Studies
... systematically reviews published studies on drug utilization in hospitalized ...A systematic literature review was carried out to identify observational studies published from inception ...
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Cigarette smoking and risk of gestational diabetes: a systematic review of observational studies
... relevant reviews, as well as web pages of selected ministries of health and other potentially relevant internet ...these studies in order to get primary ...
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A systematic review of observational studies evaluating costs of adverse drug reactions
... Therefore, studies were grouped according to the settings from where data were collected: nonhospitalized patients with ADEs leading to hospitalization, hospital- ized patients with ADEs during the ...
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Systematic Reviews of Genetic Association Studies
... analysis, systematic review methods, searching, and statistical ...for Systematic Reviews of Interventions, which has a long history of evolution and is also based on empirical evidence where ...
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Registration of experimental studies and of systematic reviews
... • Reviews of animal studies – excluded as outcomes not of direct relevance in health care practice. • Registered before screening against eligibility criteria[r] ...
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Are more observational studies being included in Cochrane Reviews?
... post-2008 reviews could potentially miss a shift that happened ...of reviews published in 2008/09 had their protocol formally approved under the guidance of Handbook version ...of reviews. Cochrane ...
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Types of Studies. Systematic Reviews and Meta-Analyses
... cohort studies, however, is that they can end up taking a very long time, since the researchers have to wait for the conditions of interest to ...long studies is that things tend to change over the course ...
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Empty reviews: a description and consideration of cochrane systematic reviews with no included studies
... empty reviews, including the Back, Fertility Regulation, Haematological Cancers, Methodology, Occupational Safety and Health, Prostatic Diseases and Urologic Cancers, Public Health, and Sexually Transmitted ...
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Assessing variability in results in systematic reviews of diagnostic studies
... tematic reviews published within a short timeframe, we do not think that this is a major ...in reviews on diagnostic tests since the existing reviews on this topic were performed, our review, which ...
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