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Total Results: 969 records

Showing results for "design sample size".

401. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/depression-postpartum-screening_research-protocol.pdf
     May 01, 2013 - At the time of the AHRQ review, consistent limitations in the literature included small sample size … published subsequently should add greater precision to these estimates by increasing the overall sample … size and may make any differences between specific tests more apparent … comparison of test results with an appropriate reference standard • Randomized controlled trials: All sample … sizes • Observational studies: sample size ≥100 subjects • Editorials, nonsystematic reviews, letters

402. Sleep-Apnea Surveillance (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/sleep-apnea_surveillance.pdf
     April 01, 2012 - Largely due to small sample size, the reported effect estimates in the studies reviewed were generally … Studies generally had small sample sizes with less than 1 year of followup. … Largely due to small sample size, the reported effect estimates in the studies reviewed were generally … Largely due to small sample sizes, the studies mostly had imprecise estimates of the comparative effects … Studies generally had small sample sizes with less than 1 year of followup.

403. Weight-Loss-Surgery Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/weight-loss-surgery_executive.pdf
     June 01, 2013 - Items included specific surgical procedures or nonsurgical treatments, study design, sample size, and … For BPD, both the number of studies and their sample sizes are much lower; thus the strength of evidence … The sample sizes, regardless of methodological design, are far smaller than those of most trials of

404. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/preterm-birth-terbutaline-pump_disposition-comments.pdf
     September 01, 2011 - We had no studies that were rated as low risk of bias or high quality for that study design. … size, is rated as low risk of bias and demonstrates a very large effect size for a clinical outcome … two studies by Lam et al, under Pulmonary oedema, were judged as underpowered not because of the sample … size...but event rate. … RCT is the best design and for interventions must always be a recommendation even when it may cost

405. Evidence-based Practice Center Systematic Review Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/sleep-apnea_research-protocol.pdf
     March 15, 2010 - or longitudinal of any duration • Prospective • Determine minimum N (sample size) after list of potentially … non-randomized comparative studies as separate “studies”/cohorts o (Not KQ 6) • Determine minimum N (sample … size) after list of potentially eligible studies are available o Will use separate minimum N’s for … The basic elements and design of the forms will be the same as multiple forms we have used for other … Studies of different study designs will be graded within the context of their study design.

406. Disposition of Comments for CER 208 Treatment for Bipolar Disorder in Adults A Systematic Review (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-208-bipolar-adults-disposition-comments.pdf
     August 07, 2018 - It would also be helpful to know the reasons for exclusion on the basis of study design (e.g., study … Moreover, 14 studies had small sample sizes of less than 200 participants and 21 studies (79 percent … Although this is a single trial, it had a large sample size and included recently manic/depressed/euthymic … intensive psychosocial treatment separately) for this outcome because the publication does not provide sample … sizes by individual intervention arm for this sub- analysis.

407. Slide 1
     effectivehealthcare.ahrq.gov/sites/default/files/sensitivity-analysis-chapter-11.pptx
     January 01, 2013 - Underlying assumptions can be altered along a number of dimensions, including: Study definitions Study design … dimensions, including study definitions (modifying exposure/outcome/confounder definitions), study design … These patients should be considered separately where sample size considerations allow.

408. Technical Brief Protocol_ 0369 Models of Survivorship Care_2-15-13_v14[1] (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/cancer-survivor-care-transition_research-protocol.pdf
     March 27, 2013 - from acute care treatment to survivorship care • Provider type • Payment considerations • Study design … providers Timing • All timing • None Setting • All care settings • Acute care inpatient Study design … We will also design data abstraction forms to gather pertinent information from each article, including … We will consider the models used, study design, analytic methods, and the similarities and differences … • Inclusion/exclusion criteria • Sample size for eligibility, at recruitment, and at followup

409. Trauma Informed Care (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/trauma-informed-care-protocol.pdf
     April 19, 2023 - Study Design Randomized controlled trials, non-randomized controlled trials, prospective cohort with … excluded unless they incorporate an experimental manipulation comparison within the larger pre/post design … sponsorship, setting, subject inclusion and exclusion criteria, intervention and control characteristics, sample … size, follow-up duration, participant baseline age, race/ethnicity (including method of obtaining race … Using trauma theory to design service systems: Jossey-Bass/Wiley; 2001. 12.

410. Kidney-Stones-Draft-Appendi-C (xls file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/kidney-stones-draft-appendi-c.xlsx
     January 01, 2024 - . (%) Intervention 1 Sample Size Intervention 1 Mean Age (SD) Intervention 1 Women No. (%) Intervention … 1 Race/Ethnicity No. (%) Intervention 2 Sample Size Intervention 2 Mean Age (SD) Intervention 2 Women … No. (%) Intervention 2 Race/Ethnicity No. (%) Intervention 3 Sample Size Intervention 3 Mean Age (SD … ) Intervention 3 Women No. (%) Intervention 3 Race/Ethnicity No. (%) Intervention 4 Sample Size Intervention … Intervention 2 Sample Size Intervention 2 Mean Age (SD) Intervention 2 Women No. (%) Intervention 2

411. Atrial-Fibrillation-Ablation Surveillance (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/atrial-fibrillation-ablation_surveillance.pdf
     May 16, 2013 - Study design filters were not applied to the Cochrane search Source: www.effectivehealthcare.ahrq.gov … years.15 The number of participants included in the randomized trials ranged from 8013 to 124.14 The sample … size of the non-randomized studies ranged from 758 to 4,156.18 Participants included in these studies … Or 2) a trial not published in the above top 5 journals but have a sample size of at least triple the … online: May 16, 2013 Appendix C: Evidence Table Author year Study name (if applicable) Study design

412. Evidence-based Practice Center Systematic Review Protocol - Management of Infantile Epilepsies (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-252-infantile-epilepsies-disposition-comments.pdf
     October 25, 2022 - requirement that at least 80% of a study population must be 36 months of age or younger, and the minimum sample … size of 30, may have resulted in omission of some key studies from the review. … The minimum sample size of 10 per procedure for surgical studies, however, is appropriate. … sham arm would be considered unethical and comparative effectiveness trials may be a better trial design … As a possible model/analogy, recommendations for metrics and study design (see comment 5 below) have

413. Asthma-Provider-Adherence Executive (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/asthma-provider-adherence_executive.pdf
     May 01, 2013 - 95% CI: 1.40, 10.32], p=0.01).65 The evidence from this study is of high quality due to its large sample … size (n=50 pharmacies and n=351/396 patients completing study), blinding of pharmacists and high rates … post intervention periods (6 percent to 21 percent);66,67 however, the studies either lacked a large sample … size and/or reported inconsistent description of controller medication use (“no inhaled corticosteroid … One study used an RCT design,5 while the other used a pre-post design.86 Both studies involved children

414. Living Systematic Review on Plant-Based Treatment for Chronic Pain (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/plant-based-treatments-revised-protocol.pdf
     March 29, 2023 - of self -directed care All KQs: Hospital care, hospice care, emergency department care Study design … for inclusion, data will be abstracted into categories that include but are not limited to: study design … , year, setting, country, sample size, eligibility criteria, population and clinical characteristics … indicated, we will consider the risk of bias of the studies and the heterogeneity among studies in design … Publication bias (small sample size bias) will be assessed using funnel plots when there are eight or

415. Breastfeeding and Health Outcomes for Infants and Children (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/breastfeeding-health-outcomes-protocol-amendment.pdf
     February 03, 2025 - We will first triage full-text articles by outcome and according to study design (i.e., ESR or primary … or there is a signal that newer evidence might change the findings of the ESR (e.g., based on the design … primary studies, we will abstract general characteristics of the study (e.g., author, year, study design … the width of confidence intervals relative to a clinically important effect estimate, sufficiency of sample … size, and number of events.

416. Disposition of Comments_Comparative Effectiveness Review No. 260: Nutrition as Prevention for Improved Cancer Health Outcomes (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/cer-260-improved-cancer-outcomes-disposition-comments.pdf
     May 22, 2023 - that the choice of diagnostic criteria and outcome measures must be feasible to recruit adequate sample … sizes representative of diverse populations for nutrition interventions. … feasibility of collection (e.g., imaging, invasive biopsies) that promote recruitment of adequate sample … sizes from diverse populations for these nutrition interventions.”

417. Assessing the Risk of Bias of Individual Studies in Systematic Reviews of Health Care Interventions (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/methods-guidance-bias-individual-studies_methods.pdf
     March 01, 2012 - Study design Assessment should evaluate the relevant sources of risk of bias by study design rather … bias or random error.4 Tools relying on this definition of quality have included the evaluation of sample … size and power to evaluate the impact of random error on the precision of estimates.23 Both GRADE24 … Design-Specific Criteria To Assess Risk of Bias We present design-specific criteria to assess risk of … Quasi- experimentation: design and analysis issues for field settings.

418. Untitled (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/aggression_research-protocol.pdf
     October 05, 2015 - observational and noncontrolled trials, and consistent with our prior CER work, we are requiring a total sample … size of 100 or greater for any nonrandomized study after discussions with our Technical Expert Panel … Study Design •! Systematic reviews, with or without meta-analyses •! … Their input helped inform decisions such as the sample size threshold for each eligible study and determination … sizes, attrition, settings, geographic locations, and study funders.

419. Peripheral Nerve Blocks for Postoperative Pain Management in Cardiothoracic Surgery (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/peripheral-nerve-block-protocol.pdf
     November 18, 2023 - Study design Randomized controlled trials (RCTs) Minimum sample size per arm of ≥30 participants. … , qualitative, case reports, opinions/letters, pilot studies, feasibility studies Studies with a sample … size <30 participants analyzed in any arm. … size, reported outcomes, outcome timing, adverse events, and follow-up period. … Therefore, study questions, design, and methodological approaches do not necessarily represent the

420. Layout 1 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/c-diff-infections_executive.pdf
     December 01, 2011 - Study design and intervention complexity, along with the fact that many outbreaks naturally diminish, … nonstandard intervention for treatment or prevention of CDI be supported by a power analysis, adequate sample … size, and an intent-to- treat analysis, in addition to other standard quality components of experimental … design. … Multicenter studies may be necessary to achieve adequate sample sizes.