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Showing results for "design sample size".

61. Layout 1 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/registries-guide_executive.pdf
    April 01, 2007 - Once these key design items have been determined, the registry design should be reviewed to evaluate … The term “quality” can be applied to registries to describe the confidence that the design, conduct, … Design • The literature has been reviewed to guide appropriate data collection. … effect, should one exist, or achieve a desired level of precision is specified, whether or not the sample … size requirement is met

62. Acs-Pci-Adjunctive-Devices Research-Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/acs-pci-adjunctive-devices_research-protocol.pdf
    July 01, 2010 - that enrolled <500 subjects will be excluded, since numerous RCTs already exist within this smaller sample … size range, observational studies in this range contain small initial experiences not representative … Observational studies will be assessed for sample size, participant selection method, exposure measurement … This can be assessed through the evaluation of both design and study limitations. … duration with clinically relevant treatment modalities, assessed adverse events, had an adequate sample

63. Venous-Ulcers-Treatment-Future Research (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/venous-ulcers-treatment-future_research.pdf
    January 01, 2014 - Design or Methodology Gap Study Design Estimation of sample size to achieve sufficient power; conduct … Both studies were more than 20 years old, had small sample sizes, and found no benefit for systemic … Standards for Estimating Proper Sample Sizes Well-developed statistical methods for estimating the size … …for estimating proper sample sizes. … …for estimating proper sample sizes. 0 14 Conducting…for recruiting patients.

64. - (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cystic-fibrosis-hgh_appendixes.pdf
    January 01, 2009 - Characteristics Study Design  RCT – Parallel  Obs – Registry  RCT – Crossover  Case Report … Year;Volume:Page): Design Characteristics Study Design  RCT – Parallel  Obs – Registry  RCT … Each study’s mean, standard deviation, and sample size is taken into account to determine its level … For example, a study with a large sample size will have a greater impact on the composite endpoint … than a similar study with a small sample size.

65. Evidence Report on the (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/depression-treatment-ssri_research-protocol.pdf
    June 15, 2010 - Sample size: There are no restrictions for study sample size. … , sample size, sample size calculation or power estimate); clinical indications; and study duration … episodes of depression, age of first diagnosis, etc.), study outcomes (both of benefit and of harm), sample … Source: www.effectivehealthcare.ahrq.gov Published Online: June 15, 2010 withdrawals; 2) sample … size; 3) high versus low overall quality; and 4) prospective determination of “treatment failure.)

66. Interventions Targeting Sensory Challenges in Children With Autism Spectrum Disorders - An Update (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/asd-interventions-disposition.pdf
    May 26, 2017 - Peer Reviewer #7 Methods Almost all of the studies reviewed are noted to have "small" sample size, … Moreover, most studies noted as a limitation their small sample size. … We set the sample size criteria of 10 for RCTs and 20 for other types of studies in consultation with … We selected a minimum sample size of 10 for RCTs because we felt that the typically greater controls … for bias and rigor helped to mitigate limitations of a smaller sample size.

67. 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 - Affiliation Section Comment Response Peer Reviewer #2 General On page 62 of the report, under Study Design … size, research conducted by intervention developers ("allegiance effect"), high rate and differential … The authors do identify one of the major limitation of small sample sizes in that it is difficult to … sizes. … size to extrapolate and major conclusions about the field—especially treatments that may benefit traumatized

68. Association Between Outcomes and Dental Services in People Receiving Treatment for Human Immunodeficiency Virus: A Rapid Response Review (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/dental-immunodeficiency-virus-rapid-response.pdf
    May 01, 2025 - : study design, study population eligibility criteria, sample size, follow-up duration, setting • … One study was conducted in the US,30 and two were in Brazil.31,32 Sample sizes were small. … Funding Study Design Sample Size Followup Length Periodontitis Definition Study Inclusion … Size Outcome Timing; Subgroup (Sample Size) Results P Value Nobreb 201931 Brazil Single-arm … Total Sample Size Outcome Timing; Subgroup (Sample Size) Results P Value Valentined 201630

69. Comments to Effective Heath Care Program Draft Documents (pdf file)
    effectivehealthcare.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 … size. … There is a strong interplay between representativeness, patient recruitment, sample size and power,

70. FRN 41 - Noninvasive Technologies for the Diagnosis of Coronary Artery Disease in Women: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/cad-women-diagnosis-future_research_1.pdf
    February 01, 2013 - RCT --Sample size needed for outcome --Size of pool of potential subjects --Duration of follow-up required … Meta-analysis of RCTsYes META-ANALYSIS:RCTs --Sample size needed for outcome --Number, quality of RCTs … Considerations include: • Sample size required for a particular outcome and to include a representative … size to achieve adequate power … size

71. 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 - size required for detecting ATE of a particular size, a sample size roughly four times as large is … detecting a difference in subgroup effects of the same magnitude as ATE for a 50:50 subgroup split; a sample … size approximately 16 times as large is required for detecting a difference that is half of ATE (at … Heterogeneity of Treatment Effects outcome measures, thereby improving statistical power for a given sample … size.

72. women-hiv-protocol-160301 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/women-hiv_research-protocol.pdf
    March 01, 2016 - size, involve only HIV-infected cohorts without a control, or do not account for confounding factors … Any comparative design is eligible including randomized trials, nonrandomized comparisons of cohorts … 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 … For populations, we will record information on sample size (largest analysis pertinent to older women

73. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/colorectal-cancer-screening_research-protocol.pdf
    May 18, 2011 - KQs 3–6: Any study design. … Sample Size KQs 1–6: We will not exclude studies based on sample size alone, although it may be considered … characteristics, recruitment setting/patient-inclusion criteria, sample size, and setting; important … Good-quality studies generally meet all of the study design-specific quality criteria. … Fair-quality studies do not meet all the criteria but do not have any fatal flaws in study design.

74. Masks-Appendix-Table-B-2-Version-2 (xls file)
    effectivehealthcare.ahrq.gov/sites/default/files/masks-appendix-table-b-2-version-2.xlsx
    January 01, 2007 - studies of masks in the community Author Publication Year Title Date Retrieved Source Link/URL Study Design … Study Dates Geographic Setting Setting Inclusion Criteria Sample Size Age (mean, years) Female (%) Definition

75. Appendix Table B-2. Observational Studies of Masks in the Community (xls file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/masks-appendix-table-b-2-version-1.xlsx
    January 01, 2007 - studies of masks in the community Author Publication Year Title Date Retrieved Source Link/URL Study Design … Study Dates Geographic Setting Setting Inclusion Criteria Sample Size Age (mean, years) Female (%) Definition

76. Wheeled Mobility (Wheelchair) Service Delivery (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/wheelchair-service_technical-brief.pdf
    January 01, 2012 - Sample sizes ranged from three to 318 and included individuals of all ages, with most studies focused … Sample Size Elements of Service Delivery Studied Primary Outcomes Assessed (Assessment Tool … Sample Size Elements of Service Delivery Studied Primary Outcomes Assessed (Assessment Tool … Sample Size Elements of Service Delivery Studied Primary Outcomes Assessed (Assessment Tool … Sample Size Elements of Service Delivery Studied Primary Outcomes Assessed (Assessment Tool

77. FRN 39 - Nonoperative and Operative Treatments for Rotator Cuff Tears: Future Research Needs (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/rotator-cuff-tears-future_research.pdf
    February 01, 2013 - However, the modest sample sizes of most rotator cuff RCTs does not allow for subgroup analyses. … RCTs with sufficient sample sizes are able to detect small treatment effects or differences in rotator … The sample size was limited by the Paperwork Reduction Act and Information Collections Policy (44 USC … However, the modest sample sizes of most rotator cuff RCTs does not allow for subgroup analyses. … observational studies; need sufficient sample size for subgroup analysis  Patient classification

78. Chronic-Cough Executive (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/chronic-cough_executive.pdf
    March 01, 2014 - A total of 5,927 participants were included across studies; sample sizes of individual studies ranged … A total of 2,923 participants were included across trials; sample sizes were relatively small, ranging … , or outcomes; (5) small sample sizes and short duration of followup; (6) lack of gold standard outcomes … CQLQ--corrected sample size and correlation coefficients for French 2002 paper for Internal Consistency … CQLQ--corrected sample size and correlation coefficients for French 2002 paper for Repeatability. 3.

79. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/pressure-ulcer-prevention_research-protocol.pdf
    January 10, 2012 - Sample Size Case studies with only one patient or very small numbers of patients (e.g., <20 patients … If there are large numbers of includable studies for the KQ(s), we may determine a minimum sample-size … , year, setting, country, sample size, eligibility criteria, population and clinical characteristics … sizes tended to have positive or negative assessments of pressure ulcer treatment. … size of the studies, and clinical settings and countries (e.g., patients in developing countries,

80. Evidence-based Practice Center Systematic Review Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/ptsd-5-protocol-update-2023.pdf
    January 01, 2023 - .9,10,12,13 The PICOTS (Populations, Interventions, Comparators, Outcomes, Timing, Settings, Study Design … , year, setting, country, sample size, eligibility criteria, source(s) of funding, study characteristics … Data Synthesis: Characteristics of included studies, such as number of publications by year, study sample … size, proportion of studies enrolling community versus military population, and distribution of studies … Study design 7. Subscale/symptom cluster data reported indicator 8.