Results

Total Results: 1,644 records

Showing results for "sample".

241. Effectiveness of Noninvasive Diagnostic Tests for Breast Abnormalities | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/breast-abnormalities-tests/research
     February 09, 2006 - Current Page Topic Timeline Jan. 1, 2005 Topic Initiated Feb. 9, 2006 Systematic Review Effectiveness of Noninvasive Diagnostic Tests for Breast Abnormalities Systematic Review Archived February 9, 2006 Web Version [NLM Site] Download Main Document PDF 1.7 MB Related Files Download Report Appendixes …

242. Breast-Biopsy-Update Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/breast-biopsy-update_executive.pdf
     September 01, 2014 - Core-needle biopsy, which retrieves a sample of tissue, and open surgical procedures are the most frequently … stereotactic guidance, ultrasound guidance, MRI guidance, other guidance, or freehand), how the biopsy sample … Sixty study arms used vacuum- assisted methods to obtain the biopsy sample; 80 used automated methods … MRI-guided biopsies were evaluated in only six studies with small sample sizes, leading to substantial … average and high risk of breast cancer All biopsy methods Insufficient – Few studies provided within-sample

243. Grades-Predictive-Values White-Paper-2015 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/grades-predictive-values_white-paper-2015.pdf
     January 01, 2015 - The objective of our methods project was to use a diverse sample of medical interventions to assess … Results of stratified analyses based on sample size, risk of bias, and magnitude of effect estimates … First, the size of our sample was limited. … Second, how representative our sample is remains unclear. … Influence of trial sample size on treatment effect estimates: meta- epidemiological study.

244. Serum Free Light Chain Analysis for the Diagnosis, Management, and Prognosis of Plasma Cell Dyscrasias: Future Research Needs (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/plasma-cell-dyscrasias-sflc-assay-future_research.pdf
     September 01, 2012 - Studies should have a priori calculation of the sample size needed for determination of the desired … Sample size not an issue, in spite of the relatively low prevalence of PCDs, because the cohorts would … Resource use likely to be moderate; sample size would depend on number of respondents. … The feasibility of such studies generally does not depend on the desired sample size. … Studies should have a priori calculation of the sample size needed for determination of the desired

245. Comparative Effectiveness Review Disposition of Comments Report: Anxiety in Children (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/disposition-of-comments-cer-192-anxiety-in-children.pdf
     August 31, 2017 - When there is a sufficient sample of studies we examine disorders separately. … that only includes patients with one of these presenting problems against a sample that includes … “other” comparison as there is not a sufficient sample of homogenous “other interventions” to examine … “other” comparison as there is not a sufficient sample of homogenous “other interventions” to examine … “other” comparison as there is not a sufficient sample of homogenous “other interventions” to examine

246. Use of Natriuretic Peptide Measurement in the Management of Heart Failure | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/heart-failure-natriuretic-peptide/research-protocol
     December 20, 2011 - Prior to performing the data extraction, a calibration exercise will be conducted using a random sample … The following will also be extracted: blood sample type for BNP measurement (plasma or serum) , assay … showing key study characteristics (i.e. population characteristics, BNP test features, study outcomes,sample … Study Attrition Loss to follow-up (from sample to study population) is not associated with key … characteristics (i.e., the study data adequately represent the sample), sufficient to limit potential

247. Plasma-Cell-Dyscrasias-Sflc-Assay Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/plasma-cell-dyscrasias-sflc-assay_executive.pdf
     August 01, 2012 - Followup times varied from 3 months to 13 years, with sample sizes of 40 to 399 patients. … of limitations in study design, including selection/ spectrum bias as well as (in one study) small sample … without adjustments for potential confounders and as C in the other five studies because of their small sample … performance of the SFLC assay varies depending on the type and distribution of PCDs in the study sample … Studies should have an a priori calculation of the sample size needed to determine the desired precision

248. Practice-Based Interventions Addressing Concomitant Depression and Chronic Medical Conditions in the Primary Care Setting | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/depression-chronic-conditions-interventions/research
     August 13, 2012 - Sample sizes ranged from 55 to 1,001, and study duration ranged from 6 to 60 months.

249. Treatment for Depression After Unsatisfactory Response to SSRIs | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/depression-treatment-ssri/research
     April 26, 2012 - Two studies with limited sample sizes and using risperidone as an augmenting agent showed benefit with

250. Depression-Treatment-Ssri Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/depression-treatment-ssri_executive.pdf
     April 01, 2012 - Similarly, studies where the entire sample were subjects with a cerebrovascular accident, dementias … Inadequate sample size was a factor in many studies. … Adequate sample size was an issue in these studies. … The second trial evaluated a dose escalation of fluoxetine in a small sample, and was suggestive of … A second study, a pilot with small sample size evaluating dose escalation, showed no effect.

251. Transparency of Reporting Requirements: Omega-3 Fatty Acids and Cardiovascular Disease (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/transparency-omega-3_research-protocol.pdf
     September 02, 2016 - This spreadsheet will capture basic intervention, outcome, study design, sample size, and whether results … they meet additional operational eligibility criteria used in the original review (based on minimum sample … intake amounts of n-3 FA), we expect that the primary reason for exclusion will be based on small sample … and study design) but would not have been included in the original report (primarily due to small sample … We quantify such impact as a potential increase in total study population sample size (>20%), a change

252. AHRQ Slide Template 2009 (ppt file)
     effectivehealthcare.ahrq.gov/sites/default/files/selecting-evidence.ppt
     January 01, 2010 - Precision Includes sample size, number of studies, and heterogeneity of effect sizes Reporting bias Extent … (II) Precision is the degree of certainty surrounding a result and is determined by sample size, number … Few studies have sufficient sample sizes or duration to adequately assess uncommon or long-term harms … Criteria commonly used to screen OSs for inclusion in CERs: Minimum duration of followup Minimum sample … These criteria may include minimum duration of followup, minimum sample size, a defined threshold for

253. AHRQ Slide Template 2009 (ppt file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/selecting-evidence.ppt
     January 01, 2010 - Precision Includes sample size, number of studies, and heterogeneity of effect sizes Reporting bias Extent … (II) Precision is the degree of certainty surrounding a result and is determined by sample size, number … Few studies have sufficient sample sizes or duration to adequately assess uncommon or long-term harms … Criteria commonly used to screen OSs for inclusion in CERs: Minimum duration of followup Minimum sample … These criteria may include minimum duration of followup, minimum sample size, a defined threshold for

254. Comparative Effectiveness of Interventions for Adolescents and Young Adults With Autism Spectrum Disorders | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/autism-adolescents/research-protocol
     March 29, 2011 - selected this study size based on a previous review of therapies for children with ASD, which used a sample … A cutoff sample size of 20 provides a balance, allowing us to review and comment on adequate literature … In particular, the TEP noted that a sample size of 20 for studies of all types of interventions (e.g. … , medical, behavioral, etc.) takes into account the typically smaller sample sizes in the ASD literature … of publication, study location (e.g., country, city, state) and time period, population description, sample

255. Cancer Quality-ASSIST Supportive Oncology Quality Indicator Set: Feasibility, Reliability, and Validity Testing (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/cancer-quality-indicator-testing_research.pdf
     April 01, 2010 - ...........................................................................................1 Study Sample … Study Sample Study inclusion criteria differed somewhat between the sites, based on local populations … At JHH/SKCCC, after abstracting 148 medical records, we concluded that we had an adequate sample to … To assess inter-rater reliability (IRR), all nurses at each site abstracted a sample of records (5%, … nurse abstraction to a physician investigator (SMD) gold standard abstraction for the 9 record IRR sample

256. Empirical Assessment of Within-Arm Correlation Imputation in Trials of Continuous Outcomes | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/continuous-outcomes-correlation/research
     November 19, 2012 - was no apparent association with followup duration, but correlation values were lower with increasing sample

257. Effectiveness of Screening and Treatment of C. difficile Infections | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/c-diff-infections/research-protocol
     May 24, 2010 - Overall Do performance measures vary with sample characteristics? … In addition, we will randomly select a 10 percent sample of abstracts determined to be eligible for inclusion … concealment, masking of the treatment status, intention to treat principles, and justification of the sample

258. 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 - • TMTs searches appear less sensitive than UP searches in all but one project, but the small sample … Again, the small sample size precludes significance • TMTs neither affected search evaluation time … The target was set to achieve as large a sample as possible within the project timeframe (1 year). … Because of the small sample size, the analysis was limited to descriptive measures, including means, … Finally, the sample size of librarians was small and all had years of experience, so we were not able

259. Comparative Effectiveness of Epoetin and Darbepoetin for Managing Anemia in Patients Undergoing Cancer Treatment–An Update to the 2006 Report | Effective Health Care (EHC) Program
     effectivehealthcare.ahrq.gov/products/cancer-anemia-update/research-protocol
     June 16, 2010 - Background and Objectives for the Systematic Review Objective Shekelle et al. 1 reviewed a sample … Sample size and extent of missing data will be extracted. … Patients: sampling, exclusion criteria, sample size, baseline characteristics, similarity of groups at … using the following rules: We will use the most complete data sets (i.e., those with the largest sample

260. Draft-Living-Review-Plant-Chronic-Pain-F-Risk-Of-Bias (xls file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/draft-living-review-plant-chronic-pain-f-risk-of-bias.xlsx
     January 01, 2023 - Risk of bias of cannabis cohort studies Author, Year Did the Study Attempt To Enroll All (or a Random Sample