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Showing results for "sample".

1541. Attention Deficit Hyperactivity Disorder: Effectiveness of Treatment in At-Risk Preschoolers; Long-Term Effectiveness in All Ages; and Variability in Prevalence, Diagnosis, and Treatment (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/adhd_disposition-comments.pdf
      October 01, 2011 - Also, the sample size should be mentioned, the denominator for the 44 CVAs and 21 TIAs. … Atomoxetine's sponsor reported that its safety sample was well over 3,000 subjects. … However, it is becoming clearer now from analyses done in the 2007 Swanson papers on the MTA Sample … The key paper by Molina et al in 2009 on the 8 year follow up of the MTA sample is also missing. … been helpful would have been to include the work of Ron Kessler using the US National Comorbidity Sample

1542. Psychological and Pharmacological Treatments for Adults with Posttraumatic Stress Disorder (PTSD): A Systematic Review Update | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/ptsd-adult-treatment-update/research-protocol
      May 24, 2017 - For KQ 4, we have chosen a sample size cutoff of 500 for prospective cohort studies and case-control … nonrandomized controlled trials, prospective cohort studies with an eligible comparison group and a sample … size of at least 500, a case-control studies with a sample size of at least 500 a All other designs … and studies using included designs that do not meet the sample size criterion Language Studies published … We will reassess risk of bias in a random sample of 10 studies included in the prior review that continue

1543. Depression-Chronic-Conditions-Interventions Executive (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/depression-chronic-conditions-interventions_executive.pdf
      August 01, 2012 - Description of Included Studies In the 10 included trials, sample sizes ranged from 55 to 1,001, and … Summary of collaborative care intervention trials Author/Trial Name Disease Sample Size Quality Ratinga … Summary of collaborative care intervention trials (continued) Author/Trial Name Disease Sample Size … Summary of collaborative care intervention trials (continued) Author/Trial Name Disease Sample Size … or 12 months (or both) by those receiving the collaborative care intervention, and one as-treated sample

1544. Depression in Children: Systematic Review | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/childhood-depression/protocol
      August 24, 2018 - Most notably, the developmental age of the sample (adolescent vs. younger children) is a critical component … age >12 and ≤18): randomized controlled trials (RCTs) Children (sample age ≤12): RCTs or controlled … All other designs and studies using included designs that do not meet the sample size criterion … When studies with sample sizes of 1,000 or more participants are available for a given intervention and … If large samples are not available, we plan to include studies with smaller sample sizes ****We anticipate

1545. Omega 3 Fatty Acids and Cardiovascular Disease - Update | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/fatty-acids-cardiovascular-disease/research-protocol
      April 02, 2015 - Minimum sample sizes (All outcomes: To be determined) We will aim for a minimum of about 25 RCTs for … lipid outcomes We expect to include at least 50 RCTs We will choose RCTs based on a combination of sample … We expect to include at least 50 RCTs We will choose RCTs based on a combination of sample size, whether … These included descriptions of the study design, sample size intervention(s), follow-up duration, outcomes … Sample size (total)   Age   Sex   Race   Medical history   Risk type Options: DM

1546. Routine Preoperative Testing: Comparative Effectiveness Review | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/preoperative-testing/research-protocol
      May 14, 2013 - unnecessary followup from preoperative tests) Eligible retrospective studies must clearly include a sample … who ordered and followed up on the tests and in what setting they were ordered; outcome definitions; sample

1547. Comparative Effectiveness of Screening for Methicillin-Resistant Staphylococcus aureus (MRSA) | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/mrsa-screening-2010/research-protocol
      June 02, 2011 - details: Statistical analyses (statistical test/estimation results) Test used Summary measures Sample … Preventive Services Task Force, 35 as follows: Was sample definition and selection prospective or retrospective

1548. Mrsa-Screening-2010 Research-Protocol (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/mrsa-screening-2010_research-protocol.pdf
      January 01, 2010 - Source: www.effectivehealthcare.ahrq.gov Published Online: October 24, 2011 □ Summary measures □ Sample … Preventive Services Task Force,35 as follows: O Was sample definition and selection prospective

1549. bipolar-disorder-treatment-protocol-140623 (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/bipolar-disorder-treatment_research-protocol.pdf
      June 23, 2014 - catalogue one-off studies of interventions (only one study examining a particular intervention) with low sample … The form will be tested by investigators using an initial sample of included studies and will be finalized

1550. autism-update-protocol-130920 (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/autism-update_research-protocol.pdf
      September 20, 2013 - After reviewing a sample of relevant articles, the team will assess the data-collection forms from the … publication, study location (e.g., country, city, state) and time period, population description, sample … will use established concepts of the quantity of evidence (e.g., numbers of studies, aggregate ending-sample … Complementary and alternative medicine use in a large pediatric autism sample. … A sample table is shown below: Date Section Original Protocol Revised Protocol Rationale This should

1551. Methods Guide for Comparative Effectiveness Reviews - Expanded Guidance on Selected Quantitative Synthesis Topics (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/quantitative-synthesis-expanded-methods_methods.pdf
      March 01, 2013 - Although the use of a composite outcome as the primary outcome in a clinical trial can reduce sample … In meta-analysis, sample size is less of a concern than in clinical trials, and thus the motivation … Clinical Trials Composite outcomes can improve statistical efficiency, increasing power for a given sample … Recommendations Descriptive study information Include information for each study describing the sample … present tables or a graphical representation of the data (forest plot) including: The comparison type, sample

1552. Appendicitis Executive (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/appendicitis_executive.pdf
      December 01, 2015 - We verified the data extraction and risk-of-bias assessment in a random sample of 368 noncomparative … Furthermore, multivariable models were often developed and evaluated in the same patient sample. … of diagnostic scores, multivariable models were often developed and evaluated in the same patient sample … Many had sample sizes that were too small to reliably detect small or moderate differences between … • In contrast to the RCTs, NRCSs of alternative testing strategies attained large sample sizes but

1553. preoperative-testing-protocol-130514 (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/preoperative-testing_research-protocol.pdf
      May 14, 2013 - preoperative  tests)     • Eligible  retrospective  studies  must  clearly  include  a  sample … who ordered and followed up on the tests and in what setting they were ordered; outcome definitions; sample

1554. Disposition of Comments Report for Comparative Effectiveness Review 128 Oral Mechanical Bowel Preparation for Colorectal Surgery (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/colorectal-surgery-preparation_disposition-comments.pdf
      April 30, 2014 - We have provided additional study design recommendations, particularly with respect to sample size … We have clarified that we were referring to the majority of studies when discussing small sample sizes … We have provided details about the sample size requirements for such a trial. … We believe that the required sample size is not prohibitive (even for a small size consortium) given … , pelvic abscess, etc.), and that the study will need to be stratified by anatomical segment, the sample

1555. Comparative Effectiveness of Terbutaline Pump for the Prevention of Preterm Birth | Effective Health Care (EHC) Program
      effectivehealthcare.ahrq.gov/products/preterm-birth-terbutaline-pump/research-protocol
      August 05, 2010 - Further, the two RCTs included in a published Cochrane review had small sample sizes (52 and 42 participants … Observational studies identified through our scoping literature search consistently have larger sample … setting, duration of followup Population characteristics: inclusion/exclusion criteria, maternal sample … x Randomization sequence generation x Allocation concealment 4 x Adequate sample … Assessment of Loss to Followup: Since the reported sample size could represent either the total number

1556. Evidence-based Practice Center Systematic Review Protocol (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/procalcitonin_research-protocol.pdf
      September 08, 2011 -  Statistical analyses (statistical test/estimation results) Test used Summary measures Sample … selection of items proposed by Deeks et al. 13 to inform the USPSTF approach, as follows: o Was sample … o Did the whole sample or a random selection of the sample, receive verification using a reference standard

1557. Venous-Ulcers-Treatment-Future Research (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/venous-ulcers-treatment-future_research.pdf
      January 01, 2014 - However, the study sample is non-randomized and, therefore, subject to bias. … However, the study sample is non-randomized and, therefore, subject to bias. … 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.

1558. Single-arm studies in comparative effectiveness reviews (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/single-group-studies_white-paper.pdf
      January 01, 2013 - authors planned to use single group studies, selection criteria for single group studies (minimum sample … However, this interpretation is limited by the small sample size. F Figure 2. … Finally, our empirical review was conducted among the small sample of CERs that had been prepared by … in the randomized two arm trial designs (though the two arm studies required a 2–4 fold increased sample

1559. Psychological and Pharmacological Treatments for Adults with Posttraumatic (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/pdf/ptsd-adult-treatment-update_research-protocol.pdf
      December 31, 2017 - military settings Other settings Study design KQs 1–3: Randomized controlled trials (RCTs) of any sample … size of at least 500,a case-control studies with a sample size of at least 500a All other designs … and studies using included designs that do not meet the sample size criterion Language Studies … For KQ 4, we have chosen a sample size cutoff of 500 for prospective cohort studies and case-control … We will reassess risk of bias in a random sample of 10 studies included in the prior review that continue

1560. Disposition of Comments Report for Oral Contraceptive Use for the Primary Prevention of Ovarian Cancer (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/cancer-ovarian-contraceptives_disposition-comments.pdf
      June 07, 2013 - non-English articles still have English abstracts (at least in PubMed), providing some information like sample … Exploring potential sample size and effect sizes from abstracts in the non-English literature (or translating … in our review only 2 studies (both assessing acute harms) were excluded specifically based on this sample … Sample sizes for the specific studies are included in the study characteristic tables. … It would be helpful to mention the sample size needed for a BRCA1+ population, which would be smaller