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Total Results: 969 records

Showing results for "design sample size".

421. Research Protocol: Clostridium difficile Infection Update (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/c-difficile-update_research-protocol.pdf
     December 23, 2014 - Category Criteria for Inclusion Study Enrollment Studies that enroll adults with suspected CDI Study Design … This selection strategy, with its focus on strong study design, means we do not expect a significant … Therefore, study questions, design, and methodological approaches do not necessarily represent the … 20 18 not 19 21 3 and 20 22 17 or 21 Search String for Diagnostics (not filtered for study design … Study design: prospective, retrospective or mixed?

422. Diagnosis and Treatment of Clinical Alzheimer's-type Dementia (CATD) (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/catd-protocol-draft_0.pdf
     November 02, 2018 - PICOTS (Populations, Interventions, Comparators, Outcomes, Timing, Settings/Study Design) 9 … quality, the quality of the evidence is low since statistical adjustment is not possible with very small sample … sizes because models become unstable when the number of cases is not much larger than the number of … is the degree of certainty around an outcome effect estimate based on the sufficiency of the total sample … size and/or number of events.

423. Data Points 15: Breast Cancer Diagnostic Workup: Prognostic factor testing among older women with ductal carcinoma in situ and early invasive breast cancer (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/dcis-prognostic-tests_research.pdf
     August 22, 2012 - Leonard for their graphic design expertise.

424. Using Deliberative Methods to Engage Patients, Consumers, and the Public (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/deliberative-methods_presentation-2011.pdf
     January 01, 2011 - Using Deliberative Methods to Engage Patients, Consumers, and the Public Community Forum Community Forum Agency for Healthcare Research and Quality Community Forum December 6, 2011 Using Deliberative Methods to Engage Patients, Consumers, and the Public Community Forum Community Forum Community …

425. Behavioral Interventions for Migraine Prevention (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/bimp-protocol.pdf
     September 27, 2022 - included trial, we will abstract general study characteristics (e.g., author, year of publication, design … is appropriate will be based on the number of studies, our judgment regarding population, research design … the width of confidence intervals relative to a clinically important effect estimate, sufficiency of sample … size, and number of events. … Therefore, study questions, design, and methodological approaches do not necessarily represent the views

426. Disposition of Comments Report for CER 226: Labor Dystocia (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/cer-226-labor-dystocia-comments.pdf
     May 14, 2020 - And for most of the outcomes compared, it is likely that RCTs are the optimal research design. … 2020 15 Section Commentator & Affiliation Comment Response Methods Peer Reviewer #1 Why was sample … size, e.g. power analyses for various outcomes, not discussed? … Sample size is implicitly included in the rating of strength of evidence— measures of association for … Reviewer #1 The discussion/conclusion is much too broad without an inadequate consideration of the many design

427. Disposition of Comments for Strategies To Prevent Weight Gain Among Adults (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/weight-gain-prevention_disposition-comments.pdf
     March 25, 2013 - Peer Reviewer 1 Results I assume that the size of the effect symbol reflects the sample size for … remaining Figures, a footnote has been added to indicate that the size of the effect symbol reflects the sample … size (Renee to add footnotes). … We included this design issue in our assessment of Directness for this reason. … Public Comment (NHLBI) Methods Studies with any sample size were accepted, suggesting that some

428. Treatments for Adults with Schizophrenia: A Systematic Review (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/schizophrenia-adult_research-protocol.pdf
     September 23, 2016 - § If no systematic reviews available for particular interventions, RCTs will be included § Sample … size of >50 for Key Question 2 • Settings: o U.S. … , year, setting, country, sample size, eligibility criteria, population and clinical characteristics … They will have a serious or “fatal” flaw in design, analysis, or reporting; large amounts of missing … If the studies in a given intervention category, when grouped by similar PICO and study design, is

429. Colorectal-Surgery-Preparation Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/colorectal-surgery-preparation_executive.pdf
     April 01, 2014 - the number of available studies, the number of studies contributing information for each outcome, sample … size, and the statistical significance of reported comparisons. … This uncertainty is explained by the relatively small sample size of included studies and the relative … Its results could be used to inform the design of future primary trials. … Such studies should have large sample sizes (to account for the low incidence of most outcome events

430. Venous-Ulcers-Treatment Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/venous-ulcers-treatment_executive.pdf
     January 01, 2014 - We did not have any restrictions based on language or sample size for the studies with a comparison … Studies of a biodegradable mesh containing fibroblasts (Dermagraft®) were limited in their sample size … The difference was not significant between the four groups because of the small sample sizes. … The studies were all limited by sample size issues, selection bias, data heterogeneities, and lack of … size calculations.

431. Research White Paper Biorepositories Addendum Registries For Evaluating Patient Outcomes Third Edition (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/wysiwyg/biorepositories-registries-guide-3rd-ed-addendum-white-paper.pdf
     February 01, 2018 - Thus, repository developers need to design processes for acquisition, processing, and storage that conserve … Project management is based on the underlying biorepository design. … Rationale and design of the National Registry of Genetically Triggered Thoracic Aortic Aneurysms and … The Congenital Heart Disease Genetic Network Study: rationale, design, and early results.

432. Case-Management Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/case-management_executive.pdf
     January 01, 2013 - Synthesis Data were abstracted and used to assess applicability and quality of the study: study design … The sample sizes of the studies of CM were variable, but many of the studies included fairly small samples … Due to heterogeneity in the characteristics of CM interventions and the limitation of small sample sizes … cases (particularly the Medicare Coordinated Care Demonstration [MCCD] trial)13 the studies had large sample … sizes and overall good quality.

433. Amended Protocol: Management of Infantile Epilepsy (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/infantile-epilepsy-amended-protocol.pdf
     March 07, 2021 - Reviews, we list the inclusion criteria separately for several categories: publication type, study design … Study Design Criteria 1. … Elements to be abstracted include: general study characteristics (e.g., study design, country, setting … certainty surrounding an effect estimate with respect to a given outcome, based on the sufficiency of sample … size, number of events, and width of confidence intervals relative to a clinically important effect

434. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/plasma-cell-dyscrasias-sflc-assay_research-protocol.pdf
     May 02, 2011 -  Time Any length of followup.9.10  Study Design o KQ 1: Cross-sectional, RCT, and … The basic elements and design of the forms will be the same as multiple forms we have used for other … comparative effectiveness reviews and will include elements that address population characteristics and sample … size, study design, analytic details and outcomes. … Studies of different study designs will be graded within the context of their study design.

435. Research White Paper - Assessing the Predictive Validity of Strength of Evidence Grades: A Meta-Epidemiological Study (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/grades-predictive-values_white-paper.pdf
     September 01, 2015 - Study design and setting. … true effect can be viewed as the effect size that we would observe if a study had an infinitely large sample … size (and thus no sampling error).8 Realistically, however, a true treatment effect can rarely be determined … Sample size calculations indicated that 130 documents would provide 80 percent power for a 4 x 2 chi-square … size Std diff in means and 95% CI Std diff Lower Upper in means limit limit Exercise Control Pruitt

436. Gout Dx protocol_140715-draft (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/gout_research-protocol-2014.pdf
     January 01, 2014 - Study-level data will include PICOTs, inclusion/exclusion criteria, study design, comorbidities, other … Studies will be weighted by sample size. … option, outcomes will be described narratively, stratified by test comparisons of interest and study design … Therefore study questions, design, and methodological approaches do not necessarily represent the views

437. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/stroke-atrial-fibrillation_research-protocol.pdf
     January 30, 2012 - 2007, three large trials comparing novel anticoagulants to VKA have been completed, with a combined sample … size of ~50,000 subjects: • Re-LY, with approximately 18,000 subjects and the new direct factor … • Original data • All sample sizes • RCTs, prospective and retrospective observational studies, … We will design the data abstraction forms for this project to collect the data required to evaluate … They had serious errors in design, analysis, or reporting; large amounts of missing information; or

438. Disposition of Comments for Interventions To Improve Cardiovascular Risk Factors in People With Serious Mental Illness (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/mental-illness-heart_disposition-comments.pdf
     April 22, 2013 - excluded very small studies (n<20) because these studies are often pilots, where blinding and other design … inappropriately exclude studies designed to address both but because of the need for conservative sample … size estimates deem their "primary" outcomes as psychiatric We excluded studies with interventions … better phrased as “There were only a few studies of antiseizure agents and available studies had small sample … sizes.”

439. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/telehealth_disposition-comments.pdf
     June 30, 2016 - 6 Commentator & Affiliation Section Comment Response Public- Annonymous Findings How does sample … size as a factor of the prevalence and incidence of certain conditions play a role in the strength … size to have the power that a diabetes intervention might have. … The sample size does not affect our calculation. … A collaboration between Continua, mHealth Summit, and HIMSS, PCHA publishes the Continua Design Guidelines

440. S123 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/s123.pdf
     October 01, 2007 - ORIGINAL ARTICLE Heterogeneity and the Interpretation of Treatment Effect Estimates From Risk Adjustment and Instrumental Variable Methods John M. Brooks, PhD,* and Elizabeth A. Chrischilles, PhD† Objectives: To contrast the interpretations of treatment effect esti- mates using risk adjustment and instrumental vari…