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Total Results: 1,644 records

Showing results for "sample".

41. Observational Studies: Empirical Evidence of Their Contributions to Comparative Effectiveness Reviews | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/observational-studies/white-paper
    December 13, 2013 - We selected a 25 percent sample of the most recent eligible CERs. … Our final sample included 23 CERs published since November 2012.

42. FRN 35 - Preventive Pharmacological Treatments for Migraine in Adults: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/migraine-future_research.pdf
    April 01, 2013 - Again, blinding and sample size are key considerations. … This should be considered when calculating sample size. … Again, blinding and sample size are key considerations. … A sample with diverse disease characteristics will be necessary. … This should be considered when calculating sample size.

43. Case Study Comparing Bayesian and Frequentist Approaches for Multiple Treatment Comparisons (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/indirect-comparisons_research.pdf
    March 01, 2013 - Pfizer Inc C-7 Reference Study, Sample Inclusion Criteria Exclusion Criteria Active Control … C-8 Reference Study, Sample Inclusion Criteria Exclusion Criteria Active Control Sponsorship such … Herschorn, 201028 Study:RCT Sample:1712 Men and women aged ≥18 years, with symptoms of OAB … C-29 Reference Study, Sample Inclusion Criteria Exclusion Criteria Active Control Sponsorship of … C-32 Reference Study, Sample Inclusion Criteria Exclusion Criteria Active Control Sponsorship of

44. Disposition of Comments for Child Exposure to Trauma: Comparative Effectiveness of Interventions Addressing Maltreatment (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/trauma-interventions-maltreatment-child_disposition-comments.pdf
    April 15, 2013 - The authors build a strong case across the manuscript for the limitations of the data (from small sample … myself tend to reduce the persuasiveness of intervention restudies for the following reasons: small sample … We can only estimate the effect of treatment in a certain population (represented by the sample) for … This proclivity is particularly misleading when the size of the sample is small: Twersky and Kahneman … The authors do identify one of the major limitation of small sample sizes in that it is difficult to

45. Effectiveness of Medical Therapy, Endovascular Therapy, and Surgery for Peripheral Arterial Disease | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/peripheral-artery-disease-effectiveness/abstract
    February 08, 2011 - Detailed chart review will be conducted on a random sample of patients (n=3500) from the registry togather … effectiveness analyses comparing surgical versus endovascular approaches will focus on the chart review sample

46. Pressure Ulcer Treatment Strategies: Comparative Effectiveness | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/pressure-ulcer-treatment/research
    May 08, 2013 - These studies examined a wide range of interventions, but sample sizes often were small. … Future research with larger sample sizes, more rigorous adherence to methodological standards for clinical

47. CER 226: Evidence summary_Labor Dystocia (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/Evidence%20Summary_2.pdf
    May 01, 2020 - versus control: Evidence summary in women with unspecified parity Category Outcome Study Design (Sample … Moderate (Imprecise) 11 Category Outcome Study Design (Sample Size) Conclusion SOE (Rationale … versus control: Evidence summary in women with unspecified parity Category Outcome Study Design (Sample … Ambulation versus control: Evidence summary in nulliparous women Category Outcome Study Design (Sample … Feasibility and ethical challenges with obtaining a large, contemporary sample of women laboring with

48. App-D-Opioid-Chronic-Pain-Surveillance-Report-2 (xls file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/app-d-opioid-chronic-pain-surveillance-report-2.xlsx
    September 30, 2015 - controlled trials Author, Year Study Design Duration Setting Country Eligibility Criteria Interventions Sample … Oral methadone (30 to 60 mg daily) (9 assigned, 6 f/u) Overall sample Mean age: 41 years Female sex: … B (unmatched sample) Mean age (SD): 55.6 (13.22) vs. 58.2 (12.82) years Female sex: 9.88% vs. 9.49% … ); 38,716 (matched sample) Visit counts for physical therapy, pain clinics, chiropractic care, primary … HR 1.19 (95% CI 1.06 to 1.35) Insurance Fair Salkar, 2021 Case-control, Medicare 5% National Sample

49. Real World Effectiveness of Carotid Artery Stenting (CAS) in Medicare Patients | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/coronary-stents-effectiveness/abstract
    April 14, 2010 - Participants, setting and expected sample size: Study population will consist of: 1) 3,300 CAS patients … In addition, greater sample size in all Medicare CAS versus CEA data will be obtained using propensity

50. Interventions To Improve Patient Adherence to Hepatitis C Treatment: Comparative Effectiveness | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/hepatitis-c-treatment-adherence/research
    December 20, 2012 - The RCTs were generally of poor quality and had small sample sizes (21 to 250). … of patients (674 and 1,560), the remaining studies had serious methodological limitations and small sample

51. S81 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/s81.pdf
    October 01, 2007 - Subjects: A random sample of 3987 admissions drawn from all 41 Utah acute-care hospitals in 2001 and … If the combined accuracy of jackknife classifications was at least as good as the whole-sample model, … We expect increased stability with adequate sample sizes. … Moreover, the sensitivity analysis of a small sample of admissions at each hospital demonstrated wide … At the time of this writing, however, there was only 1 report of a validated PSI using a cohort sample

52. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/juvenile-arthritis-dmards_research-protocol.pdf
    March 09, 2010 - Because JIA is rare, assembling a large sample size is challenging. … Therefore, we will not restrict studies based on sample size alone. … ] • Sample consists of children 18 years of age or younger. … If the study includes adults, at least 80 percent of the sample will be children or the outcomes must … • Sample consists of children 18 years of age or younger.

53. Defining an Optimal Format for Presenting Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-future-presentation-format_research.pdf
    January 01, 2019 - information (EVSI) or expected value of sample information for specific parameters (EVSI-P).P0F a … designs, one can proceed to calculate EVSI, the expected value of information from a sample n (and compare … information; EVSI-P = expected value of partial sample information; IPD = individual participant data … EVPI over willingness-to-pay graph plots the expected value of a hypothetical study with infinite sample … A survey of a large and representative sample of potential users of future research needs assessments

54. The Effectiveness of Disease-Modifying Antirheumatic Drugs (DMARDS) in Children With Juvenile Idiopathic Arthritis (JIA) | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/juvenile-arthritis-dmards/research-protocol
    March 09, 2010 - Because JIA is rare, assembling a large sample size is challenging. … Therefore, we will not restrict studies based on sample size alone. … Sample consists of children 18 years of age or younger. … If the study includes adults, at least 80 percent of the sample will be children or the outcomes must … Sample consists of children 18 years of age or younger.

55. Empirical and Simulation-Based Comparison of Univariate and Multivariate Meta-Analysis for Binary Outcomes | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/methods-binary-outcomes-evaluation/research
    March 20, 2013 - Most likely, systematic review conclusions from the meta-analyses in the empirical sample would remain … Conclusions In the empirical sample and the simulation study, the numerical difference in the summary

56. Chronic Venous Ulcers: A Comparative Effectiveness Review of Treatment Modalities | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/venous-ulcers-treatment/research
    January 27, 2014 - Rather, the risk of bias and lack of adequate sample size prevented us from establishing statistically … simple healing rates, stratification or adjustment to account for potential confounding variables, or sample

57. Can Physical Activity Improve the Health of Wheelchair Users? A Systematic Review | Effective Health Care (EHC) Program
    effectivehealthcare.ahrq.gov/products/physical-activity-wheelchair/protocol
    April 12, 2019 - Study sample sizes will be ≥30 for MS and SCI, and ≥20 for CP. … "Study sample sizes will be ≥30 for MS and SCI, and ≥20 for CP." … "Studies with the following sample sizes: MS (n≥30), CP (n≥20), SCI (n≥30)." … "Study sample sizes will be ≥30 for MS and ≥20 for SCI and CP." … "Studies with the following sample sizes: MS (n≥30), CP (n≥20), SCI (n≥20)."

58. MEDICAL MANAGEMENT OF CONGESTIVE HEART FAILURE AND THE EFFECTIVENESS OF ISOSORBIDE DINITRATE AND HYDRALAZINE (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/congestive-heart-failure-medicines_research.pdf
    March 01, 2010 - However, the effectiveness of H-ISDN in a community sample of African-Americans and other racial/ethnic … We excluded 366,249 patients (62% of the total) and took a random sample of 20% of Whites (excluding … Our sample was >98% male, limiting the generalizability of our findings to women. … This large sample allowed us to evaluate outcomes in multiple subgroups. … WITH ADEQUATE SAMPLE SIZE (N = 223,354) HISPANIC (N = 7,731) AFRICAN-AMERICAN (N = 32,611) WHITE

59. Disposition of Comments Report for Evidence Report/Technology Assessment No. 214 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/smoking-pregnancy-infants_disposition-comments.pdf
    February 25, 2014 - = 0.30) the sample size per E + C Group. … The justification for this unacceptable sample size criteria in the Report makes no sense. … (See CDC Epi-Info/Estimation of sample sizes + Fleiss). … Although it is commonly used, a minimum sample size of 50 has no intrinsic value as a cutoff. … Rather the decision about sample size should be based on the purpose of the review and the methods

60. Draft Technical Brief - Healthcare Systems Level Strategies to Address Racial and Ethnic Disparities in Health and Healthcare: An Evidence Map (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/healthcare-system-draft-technical-brief.pdf
    February 01, 2023 - sample sizes. … sample sizes. … sample sizes. … sample sizes. … Smaller bubbles indicate smaller sample sizes and larger bubbles indicate larger sample sizes.