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  1. effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/registries-guide-2nd-edition_disposition-comments.pdf
    March 03, 2010 - Is this a general comment, or a specific comment on inadequate sample size? … Is this a general comment, or a specific comment on inadequate sample size, inadequate outcome definition … Some information on background rates is needed to do sample size calculations, but the information may … Page 10, paragraph 3: This is another place where the authors refer to the sample (the registry) being … There is a strong interplay between representativeness, patient recruitment, sample size and power,
  2. effectivehealthcare-admin.ahrq.gov/products/mrsa-screening-2010/research-protocol
    December 01, 2019 - Statistical analyses (statistical test/estimation results) Test used Summary measures Sample … Preventive Services Task Force, 35 as follows: Was sample definition and selection prospective or
  3. effectivehealthcare-admin.ahrq.gov/products/schizophrenia-adult/research-2017
    February 01, 2018 - Data extraction We extracted study design, year, setting, country, sample size, eligibility criteria
  4. effectivehealthcare-admin.ahrq.gov/sites/default/files/communicating_risk_international_king.ppt
    January 01, 2005 - literacy is a frequent theme Evaluations focus on understandability and motivation to talk to provider Sample
  5. effectivehealthcare-admin.ahrq.gov/products/quality-rating/research
    November 01, 2017 - Limitations The results presented here are based on a small sample of RCTs, selected from a single
  6. effectivehealthcare-admin.ahrq.gov/sites/default/files/protocol-social-isolation.pdf
    January 01, 2013 - A second reviewer will verify a 25% sample of articles and abstracted data.
  7. Layout 1 (pdf file)

    effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/renal-artery-stenosis_executive-2007.pdf
    January 01, 2007 - restrictive patient eligibility or inadequate reporting; and limited power of studies due to small sample
  8. Untitled (pdf file)

    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/autism-medical-update_research-protocol.pdf
    February 16, 2016 - Eligible RCTs must have a total minimum sample size of 10. … We will require a higher minimum sample size (n=20) for other comparative studies as they typically … experts, much of the relevant literature on ASD is published in English; however, we will scan a sample … in the model by adjusting for factors such as age, symptom severity, or comorbidities in the study sample … use established concepts of the quantity of evidence (e.g., numbers of studies, aggregate ending-sample
  9. effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/colorectal-surgery-preparation_research-protocol.pdf
    March 26, 2013 - rectal surgery We will require that studies have enrolled at least 10 subjects (per arm); smaller sample … rectal surgery We will require that studies have enrolled at least 10 subjects (per arm); smaller sample … Even if the outcome rate is 10 percent (i.e., quite high), the sample size needs to be >400 patients … because our preliminary searches indicate that non–English-language studies are few and have small sample … for other effectiveness reviews and will include elements that address population characteristics, sample
  10. effectivehealthcare-admin.ahrq.gov/products/patient-safety-drug-data/abstract
    April 01, 2018 - Skip to main content An official website of the Department of Health & Human Services Careers Contact Us Español FAQs Effective Health Care Program Powered by the Evidence-based Practice Centers …
  11. effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/rheumatoid-arthritis-hospitalizations_research.pdf
    October 01, 2008 - Methods: Medical charts were randomly selected from a systematic sample of hospitalizations identified … Such determination would require review of all or at least a random sample of medical records without
  12. effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/breast-cancer-imaging_research-protocol.pdf
    December 17, 2013 - Table 1 represents sample questions to be asked to each of the categories of Key Informants.   … Sample questions for Key Informants Key Informant Category Potential Questions Clinical Experts/Clinical … Reference Number, Author, Year Study characteristics Study design Inclusion/exclusion criteria Sample
  13. effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/depression-postpartum-screening_executive.pdf
    May 01, 2013 - Before the data abstraction form templates were used, they were pilot tested with a sample of included … depression using a validated clinical interview or diagnostic instrument in screen positives and all or a sampleSample size ranged from 99 recruited at a single site to 4,084 enrolled from 101 practices. … Defining sample size for the study based on detecting clinically relevant differences in test performance … here is between the increased generalizability of having subjects take a single test versus overall sample
  14. effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/cer-203-adhd-disposition-comments.pdf
    January 01, 2018 - TEP Reviewer #4 Methods I also couldn't find the rationale for having different sample size for the … The review indicates that the FDA standard of sample size was included, but the rationale for doing … have now added in additional reasoning to our exclusion criteria column for study design about the sample … The midcourse change in the scope of the review (pertaining to the sample size of studies included in … have now added additional reasoning to our exclusion criteria column for study design about the sample
  15. effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/trauma-child-interventions_executive.pdf
    February 01, 2013 - We also required a sample size of 10 or more to ensure that we focused on hypothesis-testing studies … Second, the sample sizes of the studies included in this review were small to medium. … Insufficient funding also may contribute to small sample sizes. … The small sample sizes created several problems with the reliability of the analyses, and rendered … Loss of subjects to followup makes the issues related to sample size even more pronounced.
  16. effectivehealthcare-admin.ahrq.gov/products/ptsd-adult-treatment-update/research-protocol
    December 01, 2019 - For KQ 4, we have chosen a sample size cutoff of 500 for prospective cohort studies and case-control … settings Other settings Study design KQs 1–3: Randomized controlled trials (RCTs) of any sample … size of at least 500, a case-control studies with a sample size of at least 500 a All other designs … and studies using included designs that do not meet the sample size criterion Language Studies … We will reassess risk of bias in a random sample of 10 studies included in the prior review that continue
  17. effectivehealthcare-admin.ahrq.gov/products/fecal-incontinence/research-protocol
    December 01, 2019 - Moderate risk of bias may be assigned to large cohort studies with a sample size for adequate power to … of bias assessment tool is similar to our approach, we will separately assess risk of bias on only a sample … Not all treatments are feasible for all types of FI, so sample differentiation will be important for
  18. effectivehealthcare-admin.ahrq.gov/products/breast-cancer-imaging/research-protocol
    December 01, 2019 - Table 1 represents sample questions to be asked to each of the categories of Key Informants. … Sample questions for Key Informants Key Informant Category Potential Questions Clinical … Number, Author, Year Study characteristics Study design Inclusion/exclusion criteria Sample
  19. effectivehealthcare-admin.ahrq.gov/products/chronic-fatigue/research-protocol
    December 01, 2019 - abstracted into categories that include but are not limited to: study design, year, setting, country, sample … of symptoms; criteria used for diagnosis, presence of medical and psychiatric co-morbidities); the sample … Appendix Sample Search Strategy (Ovid MEDLINE) exp Chronic Fatigue Syndrome/ (4528) exp Encephalomyelitis
  20. effectivehealthcare-admin.ahrq.gov/products/antidepressants-seniors-pneumonia/research
    January 01, 2020 - Power and sample size calculations. A review and computer program.

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