Results

Total Results: 1,264 records

Showing results for "sample".

81. Evidence Report on the (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/pelvic-pain_research-protocol.pdf
    February 16, 2011 - • Loss to followup: varies by study; to maximize acceptable sample size, we will assume 0 percent … • Statistic: use the two-tailed z-test and the t-test for sample size. … • Sample size: for an RCT with 2 groups, with 100 percent meeting the diagnostic criteria for CPP … • Null hypothesis of effect size of 50 percent: need 64 subjects per study group; a total sample … • Null hypothesis of effect size of 30 percent: need 176 subjects per group; a total sample size

82. Management of Renal Masses and Localized Renal Cell Carcinoma: Current State of the Evidence (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/renal-cancer_clinician.pdf
    July 01, 2017 - ��� Local recurrence-free survival 2 (217) Better results with RN, but all studies had a small sample

83. Layout 1 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cancer-radiation_executive.pdf
    November 01, 2009 - Primary outcomes were explicitly stated in only three trials, which also reported a priori sample size … All trials enrolled a relatively small sample size, ranging from 15 to 393 patients, and studied different … Most eligible studies were noncomparative in nature and had small sample sizes.

84. Research White Paper Managing Missing Data in Patient Registries Addendum Registries for Evaluating Patient Outcomes Third Edition (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/wysiwyg/missing-data-registries-guide-3rd-ed-addendum-white-paper.pdf
    February 01, 2018 - truncation results in data missing in the observed cohort due to non-enrollment, leading the study sample … However, limiting the registry enrollment to only those newly diagnosed patients would reduce the sample … Attaining and investigating a sample of data is also a good approach, as this may inform researchers … A review of the codes contained within the sample data should be performed to understand if different … Attaining and investigating a sample of data is critical to capturing these differences and ensuring

85. Tinnitus Executive (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/tinnitus_executive.pdf
    August 01, 2013 - Anxiety symptoms 136 Insufficient for LLLT A single study with high risk of bias and small sample … Depression symptoms 136 Insufficient for LLLT A single study with high risk of bias and small sample … Small sample sizes led to these studies being considered imprecise. … Sample sizes tended to be small (<100 persons), and power calculations were largely absent from the … • Enroll sample sizes large enough to evaluate confounders.

86. S123 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/s123.pdf
    October 01, 2007 - Given this framework, suppose a researcher has data on treatment choice and survival for a sample of … Sample and Variable Definitions The data used in this study are more fully described elsewhere.25,26 … Our sample includes all patients with a diag- nosis of first-primary ESBC listed in the Iowa Cancer … Binary variables for the instruments were constructed based on percentiles across the sample. … RESULTS Table 1 compares the ESBC patients in our sample by surgical choice, the BCSI percentage in

87. Renal-Cancer Research-Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/renal-cancer_research-protocol.pdf
    April 20, 2015 - Renal mass sampling can be done by fine needle aspiration with a reading of the sample by a cytopathologist … , or by core biopsy with a reading of the sample by a surgical pathologist. … A third reviewer will audit a random sample of articles by the first two reviewers to ensure consistency … of bias in diagnostic accuracy studies Domain 1: Patient Selection Was a consecutive or random sample

88. Liver-Cancer Research-Protocol (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/liver-cancer_research-protocol.pdf
    July 24, 2013 - Sample Size Studies with very small numbers of participants (n < 20) will not be included. … See Table 2 for a sample of the proposed search strategy. … Sample of proposed search strategy for Hepatocellular Carcinoma Imaging — Ovid MEDLINE® (1998–2013) … categories will be abstracted, including but not limited to: study design, year, setting, country, sample … We will also estimate publication bias by examining whether studies with smaller sample sizes tended

89. Methods Guide for Medical Test Reviews Chapter 11 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-guidance-tests-genetic_methods.pdf
    July 01, 2012 - reliability, types of samples, the specific analyte investigated, specific genotyping methods, timing of sample … DNA-based molecular methods and those using phenotypic assays.16–18 For DNA-based tests, a variety of sample … discussion of this topic as it relates to genetic association studies has been published elsewhere.36–37 Sample … Size Calculations When assessing internal validity of studies, it is important to assess whether sample

90. Transcript Deliberativemethodswebinar (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/transcript_deliberativemethodswebinar.pdf
    April 19, 2012 - And the reason, generally, for a random sample of participants in a project, whether it’s a research … or a policy project or whatever, is to have a proportionally- representative sample of the population … Then a random sample should get you a statistically-proportional sample that represents, in various … So I guess what I would say is -- next slide -- that there are -- So that’s why you use a random sample … , not just the statistical representativeness of your sample, if you will.

91. Future Research Needs for Treatment of Obstructive Sleep Apnea (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/sleep-apnea-treatment-future_research.pdf
    February 01, 2012 - Sample Discussion Thread: Treatment ................................................................. … Sample Size Calculation for an RCT of Behavioral Interventions To Improve Compliance With CPAP, MAD, … We specifically considered the feasibility of the research questions focusing on potential sample size … size in the thousands, while using surrogate outcomes would need smaller sample sizes. … size in the thousands, while using surrogate outcomes would need smaller sample sizes.

92. Disposition of Comments: CER 224, Treatment of Depression in Children and Adolescents: A Systematic Review (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-224-depression-children-comments.pdf
    April 10, 2020 - for non- pharmacological interventions was based on single (as opposed to pooled) RCTs with small sample … “Depression Chronicity: In a sample with comorbid depression and substance use disorder, those with … age >12 and ≤18]: RCTs, children [sample age ≤12]) to capture all available evidence.” … I may have missed where sample sizes were characterized—so was surprised in Table 7 to learn that Ns … There is no distinction between sample sizes in the hundreds and those with 10 or so per group- all

93. Renal-Cancer Executive (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/renal-cancer_executive.pdf
    February 01, 2016 - Percutaneous renal mass sampling can be performed by fine needle aspiration with a reading of the sample … evidence included 2 prospective studies and 18 retrospective observational studies that ranged in sample … dNonrandomized studies must have a minimum sample size of 500 participants. Table A. … insufficient to identify any other strong predictors of malignant versus benign pathology in this sample … The presence of an on-site pathologist to assess the adequacy of the sample was also not universally

94. Disposition of Comments Report for Serum Free Light Chain Analysis for the Diagnosis, Management, and Prognosis of Plasma-Cell Dyscrasias (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/plasma-cell-dyscrasias-sflc-assay_disposition-comments.pdf
    August 23, 2012 - In addition to total sample size, it would be helpful to add the number of patients with the diagnosis … adoption of these guidelines into clinical practice in the U.S. and abroad, the initial screening blood sample … was accompanied by a urine sample in (at most) 52% of instances.2 In one U.S. center, the estimate … the public reviewer for highlighting the practical difficulties associated with obtaining a urine sample

95. Making Healthcare Safer IV Rapid Response_Active Surveillance Culturing of Clostridioides difficile and Multidrug-Resistant Organisms: Methicillin-Resistant Staphylococcus aureus, Carbapenem-Resistant Enterobacterales, and Candida auris (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/mhs4-active-infection-rapid-response.pdf
    May 01, 2024 - A randomly selected 10 percent sample of excluded references were checked by a second reviewer at the … A second team member checked a 10 percent sample of citations to verify that important studies were … A second team member checked a randomly selected 10 percent sample of the excluded citations at full-text … Sample times for surveillance of S. aureus transmission to monitor effectiveness and provide feedback … Sample sizes for surveillance of S. aureus transmission to monitor effectiveness and provide feedback

96. Machine-Learning-Tools-Appendix-C (xls file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/machine-learning-tools-appendix-c.xlsx
    January 01, 2024 - Because we used a convenience sample, the findings may be prone to selection bias. … Because we used a convenience sample, the findings may be prone to selection bias. … Because we used a convenience sample, the findings may be prone to selection bias. … Because we used a convenience sample, the findings may be prone to selection bias. … Because we used a convenience sample, the findings may be prone to selection bias.

97. Comparative Effectiveness Review No. 272_Genitourinary Syndrome of Menopause: A Systematic Review (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-272-genitourinary-syndrome-executive-summary.pdf
    July 01, 2024 - • Harms reporting was limited by sample sizes and short followup duration though most studies did … focused on natural products (i.e., herbal or botanical supplements and vitamins) and were small in sample … trials did not provide adequate statistical reporting) dDowngraded one level for imprecision (total sample … level for imprecision (SD crosses no-effect threshold) fDowngraded two levels for imprecision (total sample

98. Calcineurin_Inhibitors_Protocol_FINAL_10-07-2014 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pdf/calcineurin-inhibitor_research-protocol.pdf
    October 08, 2014 - for inclusion, but retrospective studies must use consecutive enrollment or enrollment of a random sample … Duplicate abstraction on a 10-percent random sample will be used to ensure accuracy. … ionization to analyze molecules; effective in detecting therapeutic levels of drugs in a biologic sample … Sample of Search Strategy Table A-1. … Sample Risk of Bias Items ECRI Risk of Bias Item List for Controlled or Comparative studies 1.

99. PREGNANCY, INCLUDING PRETERM BIRTH #12 (pdf file)
    effectivehealthcare.ahrq.gov/sites/default/files/pregnancy_hi_impact.pdf
    January 01, 2012 - A new blood test takes a sample of maternal blood during the first trimester in pregnant women interested … “Fetal Nucleic Acid Technology” to detect and isolate circulating fetal DNA from a maternal blood sample … “Fetal Nucleic Acid Technology” to detect and isolate circulating fetal DNA from a maternal blood sample … Sequenom states that circulating fetal DNA can be obtained from a maternal blood sample very early … comfort relative to invasive tests, and the ability of most any physician’s office to perform blood sample

100. Dispostion of Comments Report for Child and Adolescent Exposure to Trauma (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/trauma-child-interventions_disposition-comments.pdf
     February 11, 2013 - compared one type of treatment with another, a wait-list control, or no treatment/placebo using a sample … Overall the report demonstrated the large gaps in knowledge, the small sample sizes, the lack of replication … clinical research in the trauma area) but I would not have much confidence in any study with small sample … Getting larger sample sizes in this area would be difficult because larger samples are quite costly … Sample size should have been given much greater weight in determination of strength of evidence.