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Showing results for "design sample size".

201. Interventions To Prevent Age-Related Cognitive Decline, Mild Cognitive Impairment, and Clinical Alzheimer’s-Type Dementia (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/cognitive-decline-disposition-170707pdf.pdf
     March 24, 2017 - The sample size threshold is only for observational studies; RCTs of any size were eligible. … Page 26 of 230, lines 16-17 states that limitations in study design were based on study design and … Page2 and Comparative Effectiveness Reviews (ECER Guide)1 notes that excluding studies based on small sample … size introduces bias and “... may exclude valuable information.” … (non-experimental design).

202. S81 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/s81.pdf
     October 01, 2007 - Research Design: Retrospective cohort design. … Thus, HOCTA models seek to maximize prediction of both classes, rather than the class with the largest sample … size or the greatest variance. … We expect increased stability with adequate sample sizes. … Fewer cells in the HOCTA design matrix highlights the suitability of HOCTA for modeling data with sparse

203. Choice-Of-Mean White-Paper (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/choice-of-mean_white-paper.pdf
     April 01, 2015 - Group #2) Number of Studies (N) Group #1 and Group #2 Total Sample Size (Min-Max) Baseline … Group #2) Number of Studies (N) Group #1 and Group #2 Total Sample Size (Min-Max) Baseline … Group #2) Number of Studies (N) Group #1 and Group #2 Total Sample Size (Min-Max) Baseline … Group #2) Number of Studies (N) Group #1 and Group #2 Total Sample Size (Min-Max) Baseline … Group #2) Number of Studies (N) Group #1 and Group #2 Total Sample Size (Min-Max) Baseline

204. Fatty-Acids-Cardiovascular-Disease Research-Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/fatty-acids-cardiovascular-disease_research-protocol.pdf
     April 02, 2015 - • Minimum sample sizes o All outcomes: To be determined § We will aim for a minimum of about … size, whether they report subgroup or interaction analyses, duration of follow-up, and whether marine … size, whether they report subgroup or interaction analyses, duration of follow-up, and whether marine … sizes; study design features; results; and risk of bias assessment. … These included descriptions of the study design, sample size intervention(s), follow-up duration, outcomes

205. Calcineurin_Inhibitors_Protocol_FINAL_10-07-2014 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/calcineurin-inhibitor_research-protocol.pdf
     October 08, 2014 - Study Design Criteria 1. Therapeutic monitoring (KQ1a, KQ1b, KQ2). … Elements to be abstracted include general study characteristics (e.g., country, setting, study design … certainty surrounding an effect estimate with respect to a given outcome, based on the sufficiency of sample … size, number of events and width of confidence intervals relative to a clinically important effect … Small sample size will be an important limitation in many studies, and addressing this through meta-analysis

206. Untitled (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/antipsychotics-children-update_research-protocol.pdf
     December 04, 2015 - We do not have a minimum sample size for inclusion, nor do we have a minimum threshold for extent of … For dichotomous outcomes, we will report counts or proportions, and sample size, by study arm. … We will assess precision (precise or imprecise) on the basis of sample size and, if size is adequate … For binary outcomes, the sufficiency of the sample size will be mainly based on event rates in the control … Where there are at least ten studies having variable sample sizes in a meta-analysis, we will analyze

207. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/disparities-quality-improvement_research-protocol.pdf
     February 23, 2012 -  Study Design. …  The minimum sample size for inclusion is 50 per study-intervention group. … size was derived from expert opinion. … year of publication, study location (e.g., city, state) and time period, population description, sample … size, and study type (e.g., RCT, prospective observational study).

208. Quality-Gap-Palliative-Hospice Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/quality-gap-palliative-hospice_executive.pdf
     October 01, 2012 - Reviews.10 We used a limited number of the key criteria that are most appropriate for each study design … based mainly on the strength of the study designs (with randomized trials considered the strongest design … Common quality issues included small sample sizes, often due to insufficient recruitment and high rates … of research in this field could be improved by recruitment and retention efforts to assure adequate sample … size, better development and description of interventions, inclusion of theory and quality improvement

209. breast-cancer-imaging-protocol-131217 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/breast-cancer-imaging_research-protocol.pdf
     December 17, 2013 - imaging modalities in the U.S., emerging technologies, research in progress, patient values, and study design … Study design/size c. Concurrent and prior imaging modalities used d. Length of followup e. … utilization Adverse events None Timing All timing None Setting All care settings None Study design … data abstraction Data Element Endnote Reference Number, Author, Year Study characteristics Study design … Inclusion/exclusion criteria Sample size at recruitment and followup rates Population characteristics

210. Core-Needle Biopsy for Breast Abnormalities (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/breast-biopsy-update_clinician.pdf
     May 01, 2016 - biopsies were deemed to have moderate to high risk of bias because of characteristics related to their design

211. A Prospective Comparison of Evidence Synthesis Search Strategies Developed With and Without Text-Mining Tools (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-results-search-strategies-developed-with-without-text-mining-tools.pdf
     March 01, 2021 - size precludes significance … Again, the small sample size precludes significance • TMTs neither affected search evaluation time … Because of the small sample size, the analysis was limited to descriptive measures, including means, … size was small. … Finally, the sample size of librarians was small and all had years of experience, so we were not able

212. Medical Therapies for Locally Advanced Gastric Adenocarcinoma (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/gastric-cancers-protocol-amendment.pdf
     May 02, 2025 - the width of confidence intervals relative to a clinically important effect estimate, sufficiency of sample … size, and number of events. … size, and number of events.” … width of confidence intervals relative to a clinically important effect estimate, sufficiency of sample … size, and number of events.

213. genetic-testing-developmental-disabilities-protocol-140930 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/genetic-testing-developmental-disabilities_research-protocol.pdf
     September 30, 2014 - For example, some case series may not report the study sample size in the abstract; other studies (e.g … Comparators if applicable Study Population Sample Size Study Period/ Followup Studied … and sample size for each individual study Describe the number of studies identified (including … and sample size for each individual study Describe the number of studies identified (including … the citations), the outcome measures reported, and the study design and sample size for each

214. hemangioma-protocol-141223 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/infantile-hemangioma_research-protocol.pdf
     December 23, 2014 - ending- Source: www.effectivehealthcare.ahrq.gov Published online: December 23, 2014 16 sample … sizes), the quality of evidence (from the quality ratings on individual articles), and the coherence … Because of the numerous possible harm outcomes, we cannot determine a specific sample size that would … that balances the need for smaller studies of specialized populations with the need for studies with sample … sizes large enough to measure effects of the intervention. 12-17-2014 We will include the Newcastle-Ottawa

215. Microsoft Word - Comp Eff 10.doc (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/ace-inhibitor-arb-2007_research-2007-1.pdf
     January 01, 2007 - Sample sizes for individual studies ranged from 29 to 2416 patients, with a total of 16,597 patients … Despite differences in sample size, study design, length of followup, study quality, therapeutic agents … However, despite these differences in study quality, sample size, therapeutic agents, outcome measure … Sample sizes for the studies ranged from 49 to 51,410 patients, with a total of 61,978 patients. … Sample sizes for the individual studies ranged from 46 to 1213 patients, with a total of 7664 patients

216. Machine-Learning-Tools-Appendix-C (xls file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/machine-learning-tools-appendix-c.xlsx
     January 01, 2024 - citations in early batches, but retrieval was generally unaffected by other aspects, such as study design … citations in early batches, but retrieval was generally unaffected by other aspects, such as study design … citations in early batches, but retrieval was generally unaffected by other aspects, such as study design … citations in early batches, but retrieval was generally unaffected by other aspects, such as study design … practitioner's guide 2017 RobotReviewer Code Repository Convolutional neural network (CNN) Study design

217. Trauma-Child-Interventions Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/trauma-child-interventions_executive.pdf
     February 01, 2013 - We also required a sample size of 10 or more to ensure that we focused on hypothesis-testing studies … Second, the sample sizes of the studies included in this review were small to medium. … Insufficient funding also may contribute to small sample sizes. … The small sample sizes created several problems with the reliability of the analyses, and rendered … Loss of subjects to followup makes the issues related to sample size even more pronounced.

218. 8 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/methodsguide_chou_assessing_harms_when_comparing.pdf
     November 01, 2008 - sizes or are long enough in duration to adequately assess uncommon or long-term harms. 9 Third, … If large, higher quality studies are available, it could be reasonable to specify a minimum sample … size threshold in order to utilize resources efficiently. … sizes. … size threshold Studies evaluate a specific population of interest (e.g., studies evaluating populations

219. 8 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-guidance-harms_methods.pdf
     November 01, 2008 - sizes or are long enough in duration to adequately assess uncommon or long-term harms. 9 Third, … If large, higher quality studies are available, it could be reasonable to specify a minimum sample … size threshold in order to utilize resources efficiently. … sizes. … size threshold Studies evaluate a specific population of interest (e.g., studies evaluating populations

220. Liver-Cancer-Therapy Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/liver-cancer-therapy_executive.pdf
     May 01, 2013 - Each study design was evaluated according to its own strengths and weaknesses. … However, the majority of included studies in that review were of low quality with small sample sizes … A very large sample size with uniform data collection of these variables would be required to assess … These analyses can enhance the design of future RCTs or observational studies. … Design and endpoints of clinical trials in hepatocellular carcinoma.