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Showing results for "design sample size".

21. Executive Summary_Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: 2024 Update of the Evidence Base for the PTSD Trials Standardized Data Repository (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/ptsd-5-final-report-update-2024-executive-summ.pdf
    January 01, 2024 - o Overall, most studies were conducted in the United States (58%) and had sample sizes in the range … sizes were in the range of 25 to 99 participants in most studies (61%). … A total of 48,177 participants are represented; sample sizes ranged from 8 to 1,001 with most studies … The newly added studies had sample sizes ranging from 22 to 1,001, with most studies (61%) having a … sample size between 25 and 99 participants.

22. Template for Reports Developed (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/c-difficile-future_research.pdf
    October 26, 2012 - Design is susceptible to selection bias, but may be an optimal design if required sample size is large … Multiple sites may be needed to reach adequate sample sizes. … Multiple sites may be needed to reach adequate sample sizes. … Design is susceptible to selection bias, but may be an optimal design if required sample size is large … Multiple sites may be needed to reach adequate sample sizes, but crossover design may help reduce numbers

23. Layout 1 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cancer-radiation_executive.pdf
    November 01, 2009 - Four reviewers identified studies of any design describing clinical outcomes or adverse events with 10 … Primary outcomes were explicitly stated in only three trials, which also reported a priori sample size … All trials enrolled a relatively small sample size, ranging from 15 to 393 patients, and studied different … The available slots for particle beam radiotherapy are very limited, and this may have impacted the design … Most eligible studies were noncomparative in nature and had small sample sizes.

24. Transparency of Reporting Requirements: Tympanostomy Tubes (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/transparency-tympanostomy_research-protocol.pdf
    September 02, 2016 - This spreadsheet will capture basic intervention, outcome, study design, sample size, and whether results … , intervention type and duration, population, outcomes, and sample size. … We will make such comparisons only with respect to 1) general design items used to inform risk … We quantify such impact as a potential increase in total study population sample size (>20%), a change … With input from the TEP, study-design and sample-size filters will be implemented, as needed, to contain

25. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/adhd_research-protocol.pdf
    August 10, 2010 - Sample size There are no restrictions for study sample size. … , sample size, clinical indications; and study duration or length of follow-up). … history of treatment(s), age of first diagnosis, etc), study outcomes (both of benefit and of harm), sample … size, settings, funding sources, treatments (type, dose, duration, and provider), methodological limitations … size, and 3) high versus low overall quality.

26. Appendixes A-D: Recurrent Nephrolithiasis in Adults and Children: Comparative Effectiveness of Preventive Medical Strategies (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/kidney-stones-draft-appendices.pdf
    January 01, 2025 - size (less than 30 per arm) Ala-Opas, 19875 Excluded for ineligible sample size (less than 30 per arm … ) Barcelo, 19936 Excluded for ineligible sample size (less than 30 per arm) Borghi, 19937 Excluded … ineligible sample size (less than 30 per arm) Premgamone, 200125 Excluded for ineligible sample size … (less than 30 per arm) Robertson, 198526 Excluded for ineligible sample size (less than 30 per arm) … Sarica, 200627 Excluded for ineligible sample size (less than 30 per arm) Scholz, 198228 Excluded

27. Microsoft Word - Comparative_Effectiveness_Research_Review_Disposition_of_Comments_Report_Final_120710_refs_delinked1.docx (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/autism_disposition-comments.pdf
    November 01, 2010 - With the assistance of our technical experts, we selected a minimum sample size of 10 in order to maximize … With the assistance of our technical experts, we selected a minimum sample size of 10 in order to maximize … but based upon sample size. … The cut-offs for sample sizes were not specifically justified; this might be helpful, given that other … We have added rationale about our decisions regarding sample size to the Methods section of the review

28. AHRQ Evidence-based Practice Center (EPC) Program (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/wysiwyg/pdf/epc-march-2023-grand-rounds-slides.pdf
    January 01, 2023 - of a patient care recommendation will conform to the generally accepted standards of experimental design … Considerations con’t Study Sample Sizes • Sample size requirements vary by study purpose (establishing … equivalence) • Sample size requirements vary by outcome measure, and baseline risk for the outcome … sizes and inability to combine the studies • Publication bias • Suspected, but could not be formally … sizes - Lack of power to detect differences or confirm equivalence Data limitations • Use of retrospective

29. AHRQ Slide Template 2009 (ppt file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/selecting-evidence.ppt
    January 01, 2010 - Precision Includes sample size, number of studies, and heterogeneity of effect sizes Reporting bias Extent … (II) Precision is the degree of certainty surrounding a result and is determined by sample size, number … Few studies have sufficient sample sizes or duration to adequately assess uncommon or long-term harms … size Defined threshold for risk of bias Study design restrictions (cohort and case-control) Specific … These criteria may include minimum duration of followup, minimum sample size, a defined threshold for

30. AHRQ Slide Template 2009 (ppt file)
    effectivehealthcare.ahrq.gov/sites/default/files/selecting-evidence.ppt
    January 01, 2010 - Precision Includes sample size, number of studies, and heterogeneity of effect sizes Reporting bias Extent … (II) Precision is the degree of certainty surrounding a result and is determined by sample size, number … Few studies have sufficient sample sizes or duration to adequately assess uncommon or long-term harms … size Defined threshold for risk of bias Study design restrictions (cohort and case-control) Specific … These criteria may include minimum duration of followup, minimum sample size, a defined threshold for

31. Cystic-Fibrosis-Hgh Surveillance (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cystic-fibrosis-hgh_surveillance.pdf
    August 01, 2012 - In addition, the study was not published in a pivotal journal, and the sample size was not larger than … size Inclusion Criteria/Exclusio n Criteria Study Design/Intervention or Independent Variable … size Inclusion Criteria/Exclusio n Criteria Study Design/Intervention or Independent Variable … size Inclusion Criteria/Exclusio n Criteria Study Design/Intervention or Independent Variable … size Inclusion Criteria/Exclusio n Criteria Study Design/Intervention or Independent Variable

32. Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: An Update of the PTSD Repository Evidence Base (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/ptsd-6-protocol.pdf
    December 07, 2024 - .10,11,13-15 The PICOTS (Populations, Interventions, Comparators, Outcomes, Timing, Settings, Study Design … on study duration or length of follow up • Settings: o No limitation on study setting • Study Design … , year, setting, country, sample size, eligibility criteria, source(s) of funding, study characteristics … Characteristics of included studies, such as number of publications by year, study sample size, proportion … Study Design 7. Subscale/Symptom Cluster Data 8. Subgroup Analysis 9.

33. Er r or Rate Reduction Regarding Lower Limb Prosthesis (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/prosthesis_research-protocol.pdf
    March 16, 2017 - • Any study design • No minimum sample size (except not case reports) • No minimum followup time … • Any study design, including qualitative studies • No minimum sample size (other than no case reports … • Any study design, including qualitative studies • No minimum sample size (other than no case reports … sizes; study design features; funding source; results; and risk of bias questions. … These included descriptions of the study design, sample size, interventions, followup duration, outcomes

34. Intravascular Diagnostic Procedures and Imaging Techniques Versus Angiography Alone in Coronary Stenting: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/coronary-artery-stenting-future_research.pdf
    January 01, 2014 - • There is a moderate strength of evidence (on the basis of one large-sample-size nonrandomized study … , potential sample size, the time required, recruitment, and ethical issues. … The feasibility of such studies, generally, does not depend on the desired sample size. … Resource Use, Size, and Duration An RCT, especially one with a long duration and large sample size, … Resource Use, Size, and Duration An RCT, especially one with a long duration and large sample size,

35. Serum Free Light Chain Analysis for the Diagnosis, Management, and Prognosis of Plasma Cell Dyscrasias: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/plasma-cell-dyscrasias-sflc-assay-future_research.pdf
    September 01, 2012 - Advantages for producing a valid result Benefits of large sample sizes and allowing for prespecified … Advantages for producing a valid result Benefits of large sample sizes and allowing for prespecified … The feasibility of such studies generally does not depend on the desired sample size. … Advantages for producing a valid result Benefits of large sample sizes and allowing for prespecified … Advantages for producing a valid result Benefits of large sample sizes and allowing for prespecified

36. Evidence Report on the (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/pelvic-pain_research-protocol.pdf
    February 16, 2011 - • Loss to followup: varies by study; to maximize acceptable sample size, we will assume 0 percent … • Statistic: use the two-tailed z-test and the t-test for sample size. … • Sample size: for an RCT with 2 groups, with 100 percent meeting the diagnostic criteria for CPP … • Null hypothesis of effect size of 30 percent: need 176 subjects per group; a total sample size … Therefore, a conservative lower limit for sample size can be set at 50, to account for potential meta-analyses

37. Treatment for Restless Legs Syndrome: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/restless-legs-future_research.pdf
    February 01, 2013 - RCTs with sufficient sample sizes can detect meaningful differences in outcomes because randomization … and condition characteristics (age, gender, comorbidities, etc.) and the larger sample sizes that are … Resource use, size, and duration RCTs are difficult to recruit to, require large sample sizes and … Sample sizes will need to be large, and lost-to-follow-up issues will likely be significant. … Sample size will need to be large given the number of treatment options available.

38. The Effect of Protein Intake on Health (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/effect-protein-intake-protocol-amendment.pdf
    November 29, 2023 - Additionally, during screening, we will tag studies in PICO portal (using certain identifiers, such as small sample … size) to help us sort the literature and track study characteristics that may require revisiting based … (including sample size, age, gender/sex, race/ethnicity, socioeconomic status, physical activity level … evidence tables, and then assess the clinical and methodological heterogeneity (including study design … Therefore, study questions, design, and methodological approaches do not necessarily represent the

39. Template for Draft Reports (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cad-pci-bypass_appendixes.pdf
    October 06, 2006 - /ti,ab OR research design/de OR clinical trial! … size at randomization CABG sample size at randomization Group 1 outcome 1 Specify: … size at randomization CABG sample size at randomization Group 2 outcome 1 Specify: … size at randomization CABG sample size at randomization Group 3 outcome 1 Specify: … size at randomization CABG sample size at randomization Group 4 outcome 1 Specify:

40. Executive Summary_Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: 2025 Update of the Evidence Base for the PTSD Trials Standardized Data Repository (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/pharma-nonpharma-ptsd-2025-update-executive-sum.pdf
    January 01, 2025 - the United States (57%), enrolled community (not specifically military) participants (54%) and had sample … sizes in the range of 25 to 99 participants (59%). … sizes in the range of 25 to 99 participants (68%). … A total of 51,201 participants are represented; sample sizes ranged from 8 to 1,001 with most studies … The newly added studies had sample sizes ranging from 9 to 416.