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Welcome to the Systematic
Review Data Repository
Welcome to the Systematic Review Data Repository
The Systematic Review Data Repository (SRDR) is a powerful and easy-to-use tool for the extraction and management of data for systematic review or meta-analysis. It is also an open and searchable archive of systematic reviews and their data.
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Recently Completed and Deposited Reports Data

SRDR Project Indexing


Public Report Complete
Statistics: 192 Studies, 1 Key Question, 1 Extraction Form,
Date Created: May 20, 2018 11:24PM
Description: This is a Methods Research project that catalogs the various projects with publicly available data on the SRDR Webpage.

Strategies for Patient, Family, and Caregiver Engagement. Technical Brief


Public Report Complete
Statistics: 134 Studies, 2 Key Questions, 1 Extraction Form,
Date Created: Jun 04, 2020 06:38PM
Description: Objective: The widely applied Chronic Care Model emphasizes the need for an “informed activated patient” and a “prepared and proactive team” to improve patient outcomes. This Technical Brief applies a framework to create a map of the currently available evidence on patient and family engagement strategies that have been used to help people manage chronic conditions.

Interventions to Decrease Hospital Length of Stay


Public Report Complete
Statistics: 20 Studies, 32 Key Questions, 8 Extraction Forms,
Date Created: Dec 21, 2020 06:33PM
Description: Technical Brief aimed to identify and synthesize current knowledge and emerging concepts regarding systematic strategies that hospitals and health systems can implement to reduce length of stay (LOS), with emphasis on medically complex or vulnerable patients at high-risk for prolonged LOS due to clinical, social, or economic barriers to timely discharge.

Prehospital Airway Management: A Systematic Review


Public Report Complete
Statistics: 98 Studies, 4 Key Questions, 1 Extraction Form,
Date Created: Jan 09, 2021 12:16AM
Description: Objective. To assess the comparative benefits and harms across three airway management approaches (bag valve mask [BVM], supraglottic airway [SGA], and endotracheal intubation [ETI]) by emergency medical services in the prehospital setting and how the benefits and harms differ based on patient characteristics, techniques, and devices. Data sources. We searched electronic citation databases (Ovid® MEDLINE®, CINAHL®, the Cochrane Central Register of Controlled Trials, the Cochrane Database of Systematic Reviews, and Scopus®) from 1990 to September 2020, reference lists, and posted a Federal Register notice request for data. Review methods. Review methods followed Agency for Healthcare Research and Quality Evidence-based Practice Center Program Methods guidance. Using pre-established criteria, studies were selected, dual reviewed, data abstracted, and evaluated for risk of bias. Meta-analyses using profile-likelihood random effects models were conducted when data were available from studies reporting on similar outcomes, with analyses stratified by study design, emergency type, and age. We qualitatively synthesized results when meta-analysis was not indicated. Strength of evidence (SOE) was assessed for primary outcomes (survival, neurological function, return of spontaneous circulation [ROSC], and successful advanced airway insertion [for SGA and ETI only]). Results. We included 99 studies (22 randomized controlled trials and 77 observational studies) involving 630,397 patients. Overall, we found few differences in primary outcomes when airway management approaches were compared. • For survival, there was moderate SOE for findings of no difference for BVM versus ETI in adult and mixed-age cardiac arrest patients. There was low SOE for no difference in these patients for BVM versus SGA and SGA versus ETI. There was low SOE for all three comparisons in pediatric cardiac arrest patients, and in adult trauma patients when BVM was compared with ETI. • For neurological function, there was moderate SOE for no difference for BVM compared with ETI in adults with cardiac arrest. There was low SOE for no difference in pediatric cardiac arrest for BVM versus ETI and SGA versus ETI. In adults with cardiac arrest, neurological function was better for BVM and ETI compared with SGA (both low SOE). • ROSC was only applicable in cardiac arrest. For adults, there was low SOE that ROSC was more frequent with SGA compared with ETI, and no difference for BVM versus SGA or BVM versus ETI. In pediatric patients there was also low SOE of no difference for BVM versus ETI and SGA versus ETI. • For successful advanced airway insertion, low SOE supported better first-pass success with SGA in adult and pediatric cardiac arrest patients and adult patients in studies that mixed emergency types. Low SOE also supported no difference for first-pass success in adult medical patients. For overall success, there was moderate SOE of no difference for adults with cardiac arrest, medical, and mixed emergency types. • While harms were not always measured or reported, moderate SOE supported all available findings. There were no differences in harms for BVM versus SGA or ETI. When SGA was compared with ETI, there were no differences for aspiration, oral/airway trauma, and regurgitation; multiple insertion attempts was better for SGA, and inadequate ventilation was better for ETI. Conclusions. The most common findings, across emergency types and age groups, was of no differences in primary outcomes when prehospital airway management approaches were compared. As most of the included studies were observational, these findings may reflect study design and methodological limitations. Due to the dynamic nature of the prehospital environment, the results are susceptible to indication and survival biases as well as confounding; however, the current evidence does not favor more invasive airway approaches. No conclusion was supported by high SOE for any comparison and patient group. This supports the need for high-quality randomized controlled trials designed to account for the variability and dynamic nature of prehospital airway management to advance and inform clinical practice, emergency medical services education and policy, and improve patient-centered outcomes.

Interventions to Decrease Hospital Length of Stay


Public Report Complete
Statistics: 20 Studies, 32 Key Questions, 8 Extraction Forms,
Date Created: Dec 21, 2020 06:33PM
Description: Technical Brief aimed to identify and synthesize current knowledge and emerging concepts regarding systematic strategies that hospitals and health systems can implement to reduce length of stay (LOS), with emphasis on medically complex or vulnerable patients at high-risk for prolonged LOS due to clinical, social, or economic barriers to timely discharge.

Treatments for Acute Pain: A Systematic Review


Public Report Complete
Statistics: 190 Studies, 9 Key Questions, 1 Extraction Form,
Date Created: Dec 11, 2020 09:29PM
Description: To evaluate the effectiveness and comparative effectiveness of opioid, nonopioid pharmacologic, and nonpharmacologic therapy in patients with specific types of acute pain, including effects on pain, function, quality of life, adverse events, and long-term use of opioids.



Creative Commons LicenseThis graphic notice indicates that you are leaving this Federal Government Web site and entering a non-Federal Web site. Creative Commons  
The data contained in this project are distributed under the terms of the Creative Commons Attribution-NonCommerical license, which permits the use, dissemination, and reproduction in any medium, provided the original work is properly cited, and that the use is non-commercial and otherwise in compliance with the license. See: https://creativecommons.org/licenses/by-nc/3.0/

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