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Total Results: 1,644 records

Showing results for "sample".

1641. 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

1642. 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

1643. 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

1644. 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