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Total Results: 426 records

Showing results for "design sample size".

  1. www.uspreventiveservicestaskforce.org/home/getfilebytoken/MZB7xxWHfLHtcdT9uUHsrp
    April 01, 2009 - Evidence is insufficient because of: • the limited number or size of studies; • important flaws in study design
  2. www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary-screening-for-multifactorial-dyslipidemia/lipid-disorders-in-children-screening-july-2016
    August 09, 2016 - text of all potentially relevant citations, against the a priori inclusion and exclusion criteria for design … included articles, data were abstracted into evidence tables, including study characteristics, study design … Dietary Intervention Study in Children (DISC) with elevated low-density-lipoprotein cholesterol: design … Study Design Age, Mean (Range), y Population and Setting Intervention (for Trials) Outcomes … Smaller study (flaxseed) had a small sample size (n = 32) and was limited to high-risk population in
  3. www.uspreventiveservicestaskforce.org/home/getfilebytoken/MjwZ4vRLZDVUSnfMA6SrDo
    June 01, 2012 - screening and interventions, diagnostic accuracy studies of screen- ing instruments, and studies of any design … Data Abstraction and Quality Rating An investigator abstracted data on study design and setting; participant … Summary of Evidence for IPV Screening Studies, by Key Question Design Limitations Consistency Applicability … Author Contributions: Conception and design: H.D. Nelson. … intervention (not linked to screening or primary care, recidivism, etc.): 46 Wrong outcome: 83 Wrong study design
  4. www.uspreventiveservicestaskforce.org/home/getfilebytoken/cmJ4Bm9BysHuBX2Wy8MQbc
    December 07, 2005 - The design and standardization of a speech and language screening test for use with preschool children … • Handles indeterminate results in a reasonable manner • Spectrum of patients included in study • Samplesize • Administration of reliable screening test Definition of Ratings Based on Above Criteria … size (50 to 100 subjects) and a “medium” spectrum of patients. … size of very narrow selected spectrum of patients.
  5. www.uspreventiveservicestaskforce.org/uspstf/recommendation/speech-and-language-delay-in-preschool-children-screening-2006
    February 15, 2006 - RCTs that demonstrated improved speech and language outcomes had several limitations, such as small samplesize, failure to consider potential confounders, the reporting of short-term outcomes, and heterogeneous
  6. www.uspreventiveservicestaskforce.org/home/getfilebytoken/Xbtq4oDQwVo7KgmSjnnDbz
    November 01, 2021 - Studies whose design was sub- Figure 2. … Design: study did not use an included design. … The results were synthesized by KQ, type of screening test, and study design. … Study concept and design: Lin, Piper, Perdue, Whitlock. … Empirical evidence of design-related bias in studies of diagnostic tests.
  7. www.uspreventiveservicestaskforce.org/home/getfilebytoken/R33bUm6oyjhWnbw96pJHwE
    April 01, 2009 - evidence from RCTs preferentially, then well-designed non-RCTs and high-quality observational studies with samplesizes of at least 1000. … High-quality observational study with a sample size of �1000 PEDIATRICS Volume 123, Number 4, April … patients included in study The test and gold standard are measured independently (blind) of each other Samplesize The test and gold standard are applied as close together in time as possible Administration of
  8. www.uspreventiveservicestaskforce.org/uspstf/recommendation/skin-cancer-screening-july-2016
    July 26, 2016 - possible, a high-quality case-control study could provide sufficient power without requiring a large samplesize. … However, this study design has limitations in the ability to create an appropriate comparison group,
  9. www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary9/breast-cancer-screening-2009
    November 15, 2009 - Data Extraction and Quality Assessment We extracted details about the patient population, study design … assisted with internal and external review of the draft manuscript but had no additional role in the design … Years Setting or Population (Screened Patients; Control Participants) Enrollment Age, y Study Design … Number of Studies and Type Design
  10. www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-review40/gonorrhea-screening-2005
    May 15, 2005 - Sample size. Administration of reliable screening test. … size (50 to 100 subjects) and a "medium" spectrum of patients. … size of very narrow selected spectrum of patients. … 52 Examine the relationship between neighborhood conditions and gonorrhea Cross sectional block designsize; unknown symptom status; questionable generalizability.
  11. www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/colorectal-cancer-screening-june-2016
    June 15, 2016 - Studies whose design was subject to a high risk of bias were generally excluded, including studies that … Data Synthesis and Analysis For each KQ, the number and design of included studies, overall results … The results were synthesized by KQ, type of screening test, and study design. … Empirical evidence of design-related bias in studies of diagnostic tests. … Design: study did not use an included design.
  12. www.uspreventiveservicestaskforce.org/home/getfilebytoken/ZcuLSXJZXLz9Y2LECTWqVJ
    November 01, 2009 - Data Extraction and Quality Assessment We extracted details about the patient population, study design … assisted with internal and exter- nal review of the draft manuscript but had no additional role in the design … who might live 20 to 30 years longer, breast cancer Table 3—Continued Number of Studies and Type Design … Author Contributions: Conception and design: H.D. Nelson, A. Naik, C. Bougatsos, B.K. Chan, L. … 514) Wrong population (including high-risk): 20 Wrong intervention: 4 Wrong outcome: 39 Wrong study design
  13. www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary4/lung-cancer-screening-december-2013
    July 30, 2013 - Data Extraction: One reviewer extracted study data about participants, design, analysis, follow-up, … This difference also suggests possible inadequate randomization or inadequate sample size, because the … Furthermore, differences in population characteristics and systems of medical care and the small samplesizes used in the European studies may limit applicability to a U.S. population. … Randomized study on early detection of lung cancer with MSCT in Germany: study design and results of
  14. www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary50/impaired-visual-acuity-in-older-adults-screening-2009
    July 15, 2009 - size and quality score. 36 Only 4 of the studies included in the systematic review used a controlled … design. … Size) Patients With Visual Conditions Reference Standard Index Text Quality Score Ariyasu … Size (>500) Credible Reference Standard Used Reference Standard Applied to All Patients … Size, n Patient Characteristics Intervention Results Quality Score
  15. www.uspreventiveservicestaskforce.org/home/getfilebytoken/wyAJqjxBX_dHMF3WdA7WNt
    September 05, 2017 - important flaws in study design or methods. inconsistency of findings across individual studies. … Study sample sizes ranged from 63 to 4040 participants. … .1,38,39 One trial compared patching plus eyeglasses vs eyeglasses alone vs no treatment.1,37 Study samplesizes ranged from 60 to 180 participants.1 One of the 3 trials (evaluating patching plus eye­ glasses
  16. www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/asymptomatic-bacteriuria-in-adults-screening
    September 24, 2019 - Data Synthesis and Analysis Summary tables describing study design, population, and intervention characteristics … Probably reflecting small sample sizes, none of the studies reported statistically significant effects … Thus, for treatment benefits and harms, the scope was narrowly defined for study design. … Design: Study did not use an included design or was not a primary research article. … Source Study Design
  17. www.uspreventiveservicestaskforce.org/home/getfilebytoken/7K93Ldpe86aLuGS65CPKYp
    July 01, 2005 - suffer from a number of weaknesses that future studies should be designed to overcome, including small samplesize, lack of intention-to-treat analysis, lack of ethnic minority participants, and little attention
  18. www.uspreventiveservicestaskforce.org/home/getfilebytoken/EGPJ5VSbLv4_cDB7fQBmGR
    May 01, 2014 - Evidence is insufficient because of: the limited number or size of studies; important flaws in study design
  19. www.uspreventiveservicestaskforce.org/uspstf/recommendation/iron-deficiency-anemia-in-pregnant-women-screening-and-supplementation-september-2015
    September 07, 2015 - Eight studies were conducted in the United States or Europe, 3 in Iran, and 1 in Hong Kong; sample sizes … Studies were conducted in the United States, Australia, Hong Kong, Ireland, Iran, and Norway; samplesizes ranged from 45 to 1164 participants. … Studies were conducted in the United States, Ireland, Hong Kong, Norway, Iran, and Australia, and samplesizes ranged from 45 to 1164 participants.
  20. www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/breast-cancer-screening-2002
    September 03, 2002 - We abstracted details about patient population, design, quality, data analysis, and published results … However, we viewed this as an expected consequence of a study design in which a control group receives … Implementation of screening as a public health policy: issues in design and evaluation. … orP values in recent report; estimated the number of participants Appropriate Appropriate - Samplesizes differed for different publications because different methods were used to estimate the size of

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