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Showing results for "sample".

41. Carbohydrate-Intake-Draft-Report-Rob-Table (xls file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/carbohydrate-intake-draft-report-rob-table.xlsx
    February 27, 2025 - Quality Rating Non-randomized Cohort Author, year Did the study attempt to enroll all (or a random sample … Yes/No/Unclear Risk of Bias Low/Moderate/High For yes: attempted to enroll random sample of or all

42. S81 (pdf file)
    effectivehealthcare-admin.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

43. Gene Expression Profiling for Predicting Outcomes in Patients With Stage II Colon Cancer | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/colon-cancer-gene-profiling/research-protocol
    December 01, 2019 - Gene expression is determined by analyzing RNA in the sample, generally using either reverse transcriptase … ; derivation, validation, or both), sample size, and study goal (analytic validity, clinical validity … (Lack of reproducibility could result from both preanalytic factors [e.g., sample preparation] as well … Sample size (number of patients/specimens) If samples are from previous studies, which studies? … GEPs measure the activity or “expression” of multiple genes in a single RNA sample, which may reflect

44. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare-admin.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.

45. Defining an Optimal Format for Presenting Research Needs (pdf file)
    effectivehealthcare-admin.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

46. Cell-Free-Dna-Appendix-C (xls file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/related_files/cell-free-dna-appendix-c.xlsx
    September 01, 2024 - NR NR NR NR NR None NR for the eligible external validation sample. … A non-consecutive convenience sample was used. … Unclear whether a random or consecutive sample was enrolled. … The details all focus on the split sample (development sample and validation sample) rather than on the … The details all focus on the split sample (development sample and validation sample) rather than on the

47. Chapter 5: Assessing Risk of Bias as a Domain of Quality in Medical Test Studies | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/methods-guidance-tests-bias/methods
    December 01, 2019 - Selection bias The selection process determines the composition of the study sample. … Partial verification bias Only a selected sample of patients who underwent the index test is verified … Did the whole sample or a random selection of the sample receive verification using a reference standard … Sometimes the reason only part of the sample receives the reference standard is that knowledge of the … YES: All relatives that the proband identifies/reports upon represent the whole sample of relatives.

48. MEDICAL MANAGEMENT OF CONGESTIVE HEART FAILURE AND THE EFFECTIVENESS OF ISOSORBIDE DINITRATE AND HYDRALAZINE (pdf file)
    effectivehealthcare-admin.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

49. Underperformance of Contemporary Phase III Oncology Trials and Strategies for Improvement | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/grant-manuscripts/underperformance-abstract
    June 01, 2024 - and false-negative errors in these trials and the errors under alternative P value thresholds and/or sample … Applying an alternative P value threshold and/or sample size could reduce false-positive errors and slightly

50. Disposition of Comments Report for Evidence Report/Technology Assessment No. 214 (pdf file)
    effectivehealthcare-admin.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

51. Methods Guide for Medical Test Reviews (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/methods-guidance-tests-bias_methods.pdf
    July 01, 2012 - aspects of data analysis, applicability, whether ethics approval is specified, and 5-2 whether sample … Selection bias The selection process determines the composition of the study sample. … Partial verification bias Only a selected sample of patients who underwent the index test is verified … Did the whole sample or a random selection of the sample receive verification using a reference … YES: All relatives that the proband identifies/reports upon represent the whole sample of relatives.

52. Strategies for Improving the Lives of Women Aged 40 and Above Living with HIV/AIDS | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/women-hiv/research-protocol
    March 01, 2020 - to today's U.S. setting, and to outline resources that are available to these women, in a purposeful sample … We will include studies that have a sample size of at least 100. … Smaller sample sizes are unlikely to result in precise estimates, and thus the utility of recording them … Outlining Available Resources in A Purposeful Sample of Six States We will outline which resources … appear to be available to older women who live with HIV in a purposeful sample of six states, namely

53. Pharmacologic and Nonpharmacologic Treatments for Posttraumatic Stress Disorder: An Update of the PTSD Repository Evidence Base | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/ptsd-pharm-non-pharm-treatment/research
    September 01, 2023 - Overall, most studies were conducted in the United States (59%) and had sample sizes in the range of … conducted in the United States (53%), enrolled community (not specifically military) participants, and had sample … Most studies were conducted in the United States (59%) and had sample sizes ranging from 25 to 99 participants … Studies typically had sample sizes ranging from 25 to 99 participants (53%).

54. New Evidence Report on Treatments for Infantile Epilepsies (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/wysiwyg/pdf/epilepsy-infographic.pdf
    November 15, 2022 - New Evidence Report on Treatments for Infantile Epilepsies This Is a Sample Two Line Infographic Arial

55. Future Research Needs for First- and Second-Generation Antipsychotics for Children and Young Adults (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/antipsychotics-children-future_research.pdf
    February 01, 2012 - Approximate Sample Size Required Per Group for Comparisons of Two Proportions . 23 Table 7. … We also performed sample power analyses to help identify pragmatic barriers of the potential designs … Sample Size Requirements This section provides a simple framework for thinking about the sample size … of 14 (the sample size listed for an effect size of 0.80 and one sample). … Java Applets for power and sample size [Computer software]. 2006-9.

56. S38 (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/s38.pdf
    October 01, 2007 - of the anticipated design effect for a proposed cluster-randomized trial and its impli- cations for sample … From the parallel perspective of the necessary sample size to detect a prespeci- fied effect with given … Usually, assuming the same total number of patients in a given study, the variance of the sample mean … In many settings, one can use standard approaches for estimating sample size, assuming no clustering, … UNBALANCED COVARIATES AND BALANCING SCORES With reasonable sample sizes, randomization will tend to

57. Can Physical Activity Improve the Health of Wheelchair Users? A Systematic Review | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/products/physical-activity-wheelchair/protocol
    October 01, 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. Can Physical Activity Improve the Health of Wheelchair Users? Amended Protocol (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/wheelchair-users-amended-protocol.pdf
    June 21, 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).”

59. Cellulitis | Effective Health Care (EHC) Program
    effectivehealthcare-admin.ahrq.gov/health-topics/cellulitis
    Your health care provider may take a sample or culture from your skin or do a blood test to identify

60. Colon-Cancer-Gene-Profiling Research-Protocol (pdf file)
    effectivehealthcare-admin.ahrq.gov/sites/default/files/pdf/colon-cancer-gene-profiling_research-protocol.pdf
    March 13, 2012 - Gene expression is determined by analyzing RNA in the sample, generally using either reverse transcriptase … ; derivation, validation, or both), sample size, and study goal (analytic validity, clinical validity … (Lack of reproducibility could result from both preanalytic factors [e.g., sample preparation] as well …  Sample size (number of patients/specimens) o If samples are from previous studies, which studies? … GEPs measure the activity or “expression” of multiple genes in a single RNA sample, which may reflect