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Showing results for "statistical".

21. White Paper: Narratively Describing Effects of Interventions in Systematic Reviews (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/white-paper-roadmap-interventions.pdf
    November 01, 2020 - . • Five constructs (direction of effect, size of effect, clinical importance, statistical significance … • Results should not be described solely based on their statistical significance. • In evidence summaries … Narrative reporting of statistical findings offers unique challenges in terms of balancing readability … Statistical significance: narrative statements can include the construct of statistical significance … Statistical significance is related to precision of the estimate, which in turn is one of the domains

22. Covariate Selection for Observational Comparative Effectiveness Research
    effectivehealthcare.ahrq.gov/sites/default/files/covariate-selection-chapter-7.pptx
    January 01, 2013 - Statistical methods can be used to control for confounding. … is sometimes called statistical adjustment, control, or conditioning. … We recommend including risk factors in statistical models to increase the efficiency/precision of an … Using statistical associations to select potential confounders can result in selection and adjustment … Describe the approach to be used to select covariates for statistical models Use approaches based on

23. Disposition of Comments for Migraine in Adults: Preventive Pharmacologic Treatments (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/migraine-prevention_disposition-comments.pdf
    April 18, 2013 - Reviewer 2 Comments for statistical methods for adults section The general statistical framework is … Reviewer 2 Comments for statistical methods for adults section For studies without events in both … Reviewer 2 Comments for statistical methods for adults section All estimates reported 95% CI, but … The general statistical framework is fine. … Pooled estimate was homogeneous (non statistical tests for heterogeneity).

24. Development and Implementation of Secure Statistical Analyses on Distributed Databases | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/dsitributed-database-analyses/abstract

25. Ch-7-User-Guide-To-Ocer 130129 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/ch-7-user-guide-to-ocer_130129.pdf
    March 29, 2012 - is sometimes called statistical adjustment, control, or conditioning. … When we include a common effect of two independent causes in our statistical model, the previously … It has been established that inclusion in statistical models of variables strongly associated with … The second approach relies primarily on statistical associations to select variables for control of … o Describe the approach to be used to select covariates for statistical models.

26. Untitled (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/suicide-prevention_research-protocol.pdf
    December 23, 2015 - Which statistical methods are reliable and valid for analyzing linked national, state, and community … What are potential sources of bias for these statistical methods? b. … When available, we will also tabulate the actual statistical packages and procedures used. … Statistical Abstracts of the United States. Washington, D.C: US Census Bureau; 2015. … https://www.census.gov/prod/www/statistical _abstract.html. Accessed on July 14, 2015. 2.

27. Towards a Framework for Communicating Confidence in Methodological Recommendations for Systematic Reviews and Meta-Analyses (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/methodological-recommendations-framework-communications_research.pdf
    September 01, 2013 - The other two recommendations (R2 and R3) pertain to questions of a statistical nature. … For example, for R2 it is reasonable to choose measures that quantify the statistical performance of … terms of statistical performance) can be evaluated with well-established methods. … Almost invariably, this requires statistical expertise. … Statistical methods for meta-analysis. San Diego, CA: Academic Press; 1985 41.

28. Thompson_ECCS2012 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/thompson_eccs2012.pdf
    January 01, 2012 - Slide 12: Evidential Preferences  (2 of 5) • General statistical data • Ethnic-­‐specific  statistics … negative framing: survival and mortality data Slide 13: Evidential Preferences  (3 of 5) • General Statistical … Health Decisions  (2 of 2) • Studies have shown that anecdotes are more powerful than a variety of statistical … • In addition to the psychic numbing in the face of statistical data, there are other counterintuitive

29. 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 - Three definitions of stability of effect based on change in statistical significance and magnitude … Stability of Effect: Definition 2 (Lenient Definition) Change in statistical significance Same as … Stability of Effect: Definition 3 (Staggered Definition) Change in statistical significance Same … C indices for definitions 1 and 3 reached statistical significance (CIs did not cross 0.5). … Statistical methods for the assessment of prognostic biomarkers (Part I): discrimination.

30. Asthma-Immunotherapy-2011 Research (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/asthma-immunotherapy-2011_research.pdf
    January 01, 2011 - Statistical analysis 5±1 Assessment of temporality*** 5±2 10. … Use of check lists in assessing the statistical content of medical studies. … R: A language and environment for statistical computing [computer program]. Version. … R Project for Statistical Computing, R Foundation for Statistical Computing, Technische Universität … Statistical analysis of the National Institutes of Health peer review system.

31. Ch 3-User-Guide-To-Ocer 130129 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/ch_3-user-guide-to-ocer_130129.pdf
    September 21, 2012 - not a concern because it is uncorrelated with explanatory variables and can be handled well with statistical … Statistical perspective: This perspective is that the interactions represent nonrandom variability in … It should also be noted that a statistical test of interaction does not correspond to an assessment … The presence or absence of statistical interaction depends on various mathematical aspects of the regression … If subgroup analysis is intended to be confirmatory, investigators should ensure adequate statistical

32. Coronary-Artery-Stenting Executive (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/coronary-artery-stenting_executive.pdf
    February 01, 2013 - However, a large number of studies did not report full statistical analyses of the net change. … We did not conduct statistical tests to assess publication bias, as most of the statistical methods … The statistical significance of both outcomes was not reported. … significance (2 RCTs) 4 (7,328) No statistical significance (4 studies) Medium term 5 (1,652) 0.79 … However, no statistical comparison was reported, making the results difficult to interpret.

33. An analytical framework for quantifying components of variability in prescriber decisions (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/instrumental-variable-methods_research.pdf
    April 01, 2010 - Journal of the American Statistical Association 1997;92:1171-1176. 16. … Journal of the Royal Statistical Society, Series B 2006;68:815- 836. 18. … Journal of the American Statistical Association 1996;81:444-455. 21. … Journal of the American Statistical Association 1995;90:431-442. 67. Durbin J. … Stata Statistical Software: Release 9. College Station, TX: StataCorp LP).

34. Rapid Evidence Product_Nonemergent Percutaneous Coronary Intervention Versus Optimal Medical Treatment for Stable Ischemic Heart Disease: A Rapid Response Literature Review (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/rapid-evidence-heart-disease.pdf
    October 01, 2022 - difference No statistical difference No statistical difference No statistical difference … No statistical difference No statistical difference No statistical difference NR NR NR NR … Radaideh25 RCT No statistical difference No statistical difference No statistical difference … difference No statistical difference No statistical difference No statistical difference … al PCI benefit NR PCI benefit No statistical difference No statistical difference NR No statistical

35. Comparative Effectiveness of Strategies to De-escalate Aggressive Behavior in Psychiatric Patients in Acute Care Settings (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/aggression_executive.pdf
    October 01, 2016 - The CRTs in this report did not control for clustering in their statistical analyses, which weakened … Decrease achieved since baseline with risk assessment (-41%) vs. usual care (-15%), no statistical … Diagnostic and Statistical Manual of Mental Disorders (3rd edition, revised; DSM–III–R). … Diagnostic and Statistical Manual of Mental Disorders (4th Edition; DSM-IV). … Diagnostic and Statistical Manual of Mental Disorders (5th edition; DSM-5).

36. Ch 11-User-Guide-To-Ocer 130129 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/ch_11-user-guide-to-ocer_130129.pdf
    January 03, 2012 - All statistical models (and study results) are based on assumptions, and the validity of the inferences … Cohort Definition and Statistical Approaches If it is possible to do so, it can also be extremely … useful to consider the use of more than one cohort definition or statistical approach to ensure that … Sometimes a sensitivity analysis can reveal a key weakness in a particular approach to a statistical … Statistical Software–Based Analysis For some of the approaches discussed, the software is available

37. S50 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/s50.pdf
    October 01, 2007 - features, advantages, and disadvan- tages to those of randomized controlled trials and sophisticated statistical … studies can uncover better practices more quickly than randomized controlled trials or sophisticated statistical … Create a study database suitable for statistical analyses. 5. … Multivariable statistical methods are then used to compare alternative treatments while controlling for … CPI methodology allows important statistical associations to be identified.

38. Assessing the Quality of Individual Studies (ppt file)
    effectivehealthcare.ahrq.gov/sites/default/files/assessing-quality.ppt
    January 01, 2010 - Inferential Errors: Result from problems in data analysis and interpretation, such as choice of the wrong statistical … Analytical methods to control confounding Matching, stratification, multivariate analysis, or other statistical … Design and conduct of study address risk of bias Appropriate measurement of outcomes Appropriate statistical … and analytical methods Low drop-out rates Adequate reporting of statistical and analytical methods … Principal investigators should identify an appropriate measurement of outcomes, appropriate statistical

39. Colorectal-Surgery-Preparation Research-Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/colorectal-surgery-preparation_research-protocol.pdf
    March 26, 2013 - ) “rule of 10,” this means that a study needs to include at least 40 (= 4 × 10) outcome events for statistical … studies, we will use items from the Newcastle-Ottawa tool,24 with the addition of items relevant to statistical … will be synthesized (qualitatively and, if appropriate, quantitatively) to better evaluate (and if statistical … For all statistical tests, Source: http://effectivehealthcare.ahrq.gov Posted: March 26, 2013 12 … agree, therefore the data are consistent); instead, we will assess the direction, magnitude, and statistical

40. Engaging-Caregivers-Appendix-C (xls file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/engaging-caregivers-appendix-c.xlsx
    May 29, 2025 - Did the Study Perform Appropriate Statistical Analyses on Potential Confounders (e.g., Age, Sex, Other