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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary26/tobacco-use-in-children-and-adolescents-primary-care-interventions-2013
December 11, 2012 - qualitatively explored patterns of association between effect size and several intervention and study design … The meta-analysis was adjusted for the cluster randomization of 3 trials 15-17 by dividing the sample … sizes in these studies by a design effect based on average cluster size and an estimated intraclass … described in our methods, we qualitatively examined several specific intervention characteristics and study design … All of the studies differed widely in terms of sample size, the types of interventions tested, and primary
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www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-review11/asymptomatic-bacteriuria-in-adults-screening-2008
July 15, 2008 - Data Extraction
We abstracted information on sample size, entry criteria, demographic characteristics … , comorbid conditions, study design, treatment group allocation, and clinical outcomes of interest. … No outcomes (n = 32): Study reported only microbiologic or ecologic outcomes
Study design … Benefits: not an RCT, meta-analysis, or systematic review
Harms: did not meet study design … Author, Year (Reference)
Study Design
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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/perinatal-depression-preventive-interventions
February 12, 2019 - Data Extraction and Quality Assessment
Two reviewers applied USPSTF design-specific criteria 14 to … Design: Study did not use an included design. Language: Publication not in English.
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/-KMSTWRT9xbm7spaqDq_GE
February 12, 2019 - Data Extraction and Quality Assessment
Two reviewers applied USPSTF design-specific criteria14 to assess … Comparative effectiveness
11 Insufficient follow-up
83 Outcomes
28 Population
23 Intervention
9 Study design … Comparative effectiveness
11 Insufficient follow-up
19 Outcomes
28 Population
22 Intervention
12 Study design … Design: Study did not
use an included design. Language: Publication not in English. … Concept and design: O’Connor, Senger, Coppola,
Gaynes.
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/5V8t2G6kCTJU6fLBHnfTuR
January 01, 2013 - sizes. … Mode of Delivery
Fourteen observational studies reported in 16 publica-
tions (sample sizes of 56 to … Sample sizes ranged from fewer than 50 (29, 31, 32)
to more than 1000 (15). … sizes. … Author Contributions: Conception and design: R. Chou, J.M. Guise.
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/r_MgZHrtyHRn7rZoCPS6MT
February 01, 2011 - school-aged vision
outcomes compared with no screen-
ing.22–24 Besides the use of a retrospec-
tive design … pediatrics.aappublications.org/
TABLE 5 RCTs and Controlled Observational Studies of Preschool Vision Screening
Study (Year);
Design … Size, and Proportion
With Condition
Setting
Ottar et al51 (1995) and
Donahue et al59
(2002)
MTI … Size, and Proportion
With Condition
Setting
VIP Study Group55
(2004)
Crowded linear Lea symbols … size
● Administration of reliable screening
test
● Random or consecutive selection of
patients16
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www.uspreventiveservicestaskforce.org/uspstf/about-uspstf/methods-and-processes/procedure-manual/procedure-manual-section-6-methods-arriving-recommendation
July 06, 2017 - Do the studies have the appropriate research design to answer the key question(s)? 2. … of the studies that are judged as fair or good quality, using criteria based on each type of study design … question may be deemed "convincing" when there are sufficient well-conducted studies of appropriate design … At times severe harms occur at a relatively infrequent rate compared to benefits and require larger sample … sizes than those studied in RCTs designed to evaluate benefits.
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www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-review48/hepatitis-b-in-pregnant-women-screening-2009
June 15, 2009 - Data Extraction
One reviewer abstracted information on study design, sample size, entry criteria,
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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary24/drug-use-illicit-primary-care-interventions-for-children-and-adolescents-march-2014
March 11, 2014 - studies in narrative form and summary tables detailing the important features of the study populations, design … Study, Year (Reference)
Quality Rating
Country
Intervention Setting
Study Design
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/Z6Rfj-qwfoMbuLp-hBmhzS
May 01, 2021 - (total sample
size) by test or outcome
Summary of findings by test
or outcome
Consistency
and precision … (total sample
size) by test or outcome
Summary of findings by test
or outcome
Consistency
and precision … (total sample
size) by test or outcome
Summary of findings by test
or outcome
Consistency
and precision … (total sample
size) by test or outcome
Summary of findings by test
or outcome
Consistency
and precision … Concept and design: Feltner, Wallace, Hicks, Voisin,
Jonas.
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/myqvgr-dsW7k3eQbwj4aR4
February 01, 2013 - qualitatively
explored patterns of association between effect size and
several intervention and study design … The meta-
analysis was adjusted for the cluster randomization of 3
trials (15–17) by dividing the sample … sizes in these studies
by a design effect based on average cluster size and an
estimated intraclass … All of the
studies differed widely in terms of sample size, types of
interventions tested, and primary … Author Contributions: Conception and design: C.D. Patnode,
E. O’Connor, E.P. Whitlock, J. Hollis.
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www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-review49/hepatitis-c-screening-2013
November 15, 2012 - We also included large studies (sample size >1000 participants) reporting harms associated with diagnostic … Data Extraction and Quality Rating
One investigator abstracted details about the study design, patient … Sample Size, n
Setting, Population Characteristics
HCV Screening Strategies
Quality
Gunn … negative psychological and social effects, but results are difficult to interpret because of small sample … sizes and methodologic shortcomings, including no unscreened comparison group.
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/k-btyK4W2-v9KnemTK8WDx
September 14, 2021 - Data Abstraction and Quality Rating
A single investigator abstracted details about study design, patient … Sample sizes ranged from 1700 to 63 338 (total n = 70 174). … the US,23,29,34,37 UK,19,30,31,35,38 or Canada
and were fair quality (eTable 5 in the Supplement).34 Sample … sizes ranged from 133 to 3974 (total n = 16 204).19,23,29-31,34,35,37,38
Studies enrolled exclusively … Concept and design: Cantor, Dana, Nelson,
Winthrop, Chou.
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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/obesity-in-adults-screening-and-counseling-2003
December 15, 2003 - Two reviewers independently abstracted data on study design, population, sample size, treatment, outcomes … When sample size was not reported with variance, 32 , 33 baseline sample was used. … Agency staff and USPSTF members participated in the initial study design and reviewed interim analyses … size concerns limit conclusions. … In addition, aggregate values of their findings do not reflect variations in RCT sample size, length
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www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary21/depression-in-children-and-adolescents-screening-2009
March 15, 2009 - evidence from RCTs preferentially, then well-designed non-RCTs and high-quality observational studies with sample … sizes of at least 1000. … High-quality observational study with a sample size of <1000
Return to Table of Contents … included in study
The test and gold standard are measured independently (blind) of each other
Sample … size
The test and gold standard are applied as close together in time as possible
Administration
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/s5tZxonEjD3qZsoj-7Bq5P
May 01, 2014 - studies in narrative form
and summary tables detailing the important features of the
study populations, design … Author Contributions: Conception and design: C.D. Patnode,
E. O’Connor, E.P. Whitlock. … : 45
Comparative
effectiveness: 10
Outcomes: 21
Population: 26
Condition: 4
Intervention: 5
Study design … : 45
Comparative
effectiveness: 10
Outcomes: 19
Population: 26
Condition: 4
Intervention: 5
Study design … : 45
Comparative
effectiveness: 10
Outcomes: 26
Population: 26
Condition: 4
Intervention: 5
Study design
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www.uspreventiveservicestaskforce.org/home/getfilebytoken/Lm94jySKCYrG3zsUP8Jd8E
February 16, 2016 - Evidence is insufficient because of
the limited number or size of studies.
important flaws in study design … , assessment of treat-
ment evidence was complicated by the variation among studies in
intervention design … Study concept and design: Siu, Bibbins-Domingo,
Grossman, Ebell, García, Kemper, Krist,
Phillips.
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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary11/asymptomatic-bacteriuria-in-adults-screening-2008
July 15, 2008 - Data Extraction
We abstracted information on sample size, entry criteria, demographic characteristics … , comorbid conditions, study design, treatment group allocation, and clinical outcomes of interest. … Author, Year (Reference)
Study Design
-
www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/child-maltreatment-counseling-2004
March 09, 2004 - From each included study, we abstracted the study design, number of participants, setting, length and … Sample size?
Administration of reliable screening test? … although not best, standard; interprets reference standard independent of screening test; moderate sample … size (50 to 100 subjects) and a "medium" spectrum of patients. … size of very narrow selected spectrum of patients.
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www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/genital-herpes-screening-november-2016
December 20, 2016 - Source
Analytic Sample … Size
Eligible Serologic Tests
Population
Recruitment Setting; Country
Age, Mean (SD), y
Sex … sizes were small, and overall attrition was >20% in both trials. … Western blot
Incidence was self-reported; outcomes were measured over a relatively short duration; sample … sizes were small, and overall attrition was >20% in both trials.