Results

Total Results: 426 records

Showing results for "design sample size".

1. Archived: Final Research Plan: Depression in Children and Adolescents: Screening | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan15/depression-in-children-and-adolescents-screening
   September 15, 2013 - size ≥1,000 Retrospective cohort studies with sample size ≥1,000 Criteria specific to … KQ 6: Prospective cohort studies with a sample size ≥1,000 Retrospective cohort … size <1,000 Retrospective cohort studies with a sample size <1,000 Criteria specific … to KQ 6: Prospective cohort studies with a sample size <1,000 Retrospective cohort … studies with a sample size <1,000 Language English Non-English Date

2. Procedure Manual Appendix VI. Criteria for Assessing Internal Validity of Individual Studies | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/about-uspstf/methods-and-processes/procedure-manual/procedure-manual-appendix-vi-criteria-assessing-internal-validity-individual-studies
   July 01, 2017 - Thus, studies of any design that use outdated technology or technology that is not feasible for primary … Presented below are a set of minimal criteria for each study design and a general definition of three … size Reliable screening test Definition of ratings based on above criteria: Good: Evaluates … size (50 to 100 subjects) and a "medium" spectrum of patients. … size or very narrow selected spectrum of patients.

3. Archived: Final Evidence Summary: Low-Dose Aspirin Use for the Prevention of Morbidity and Mortality From Preeclampsia: Preventive Medication | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary51/low-dose-aspirin-use-for-the-prevention-of-morbidity-and-mortality-from-preeclampsia-preventive-medication-september-2014
   April 08, 2014 - Three of the 4 trials with lower mortality in the placebo group had sample sizes of 100 or fewer per … Analysis of the effect of dosage also was confounded by unequal distribution of sample sizes in different … Pooled analysis of preterm birth from trials of women at risk for preeclampsia, sorted by sample size … Pooled analysis of preeclampsia from trials of women at risk for preeclampsia, sorted by sample size. … Pooled analysis of perinatal mortality from all trials, sorted by sample size.

4. Procedure Manual Appendix XII. Summary of Evidence Table for Evidence Reviews | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/about-uspstf/methods-and-processes/procedure-manual/procedure-manual-appendix-xii-summary-evidence-table-evidence-reviews
   July 01, 2017 - No. of Studies (k), No. of Participants (n), Study Design (Second-Order Stratification) D. … summaries at the outcome level, the number of contributing studies, number of events, and the combined sample … size should also be reported. … point estimates are close and confidence intervals are narrow, without concerns about insufficient sample … size, low event rates, or estimates that could suggest different clinical actions would be appropriate

5. Final Research Plan: Lung Cancer: Screening | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan/lung-cancer-screening
   August 16, 2018 - not considering smoking and age (known risk factors for lung cancer) KQs 1–5, 8: Studies with a sample … size less than 1,000 KQs 6, 7: For surgery (established standard treatment), studies with a sample … size less than 500; for SBRT, no limit on sample size Study duration KQs 1–5, 7, 8: Any length … Languages other than English Study quality Good or fair quality Poor quality (according to design-specific

6. Archived: Evidence Summary: Aspirin for the Prevention of Cardiovascular Disease: Preventive Medication | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary10/aspirin-for-the-prevention-of-cardiovascular-disease-preventive-medication-2009
   March 15, 2009 - of research design I: Properly conducted randomized, controlled trial (RCT). … size (50-100 subjects) and a "medium" spectrum of patients.      … size or very narrowly selected spectrum of patients. … size (50-100 subjects) and a "medium" spectrum of patients.      … size or very narrowly selected spectrum of patients.

7. Draft Research Plan: Prostate Cancer: Screening | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/draft-research-plan/prostate-cancer-screening-adults
   October 12, 2023 - ., bone health, hot flashes, gynecomastia); and surgical complications Other outcomes Study Design … active treatments in trials. § For populations not addressed well in randomized, controlled trials. ║ Sample … size of >100 … ¶ Sample size of at least 1,000; uncontrolled studies only eligible if randomized, controlled trials

8. Final Research Plan: Prostate Cancer: Screening | United States Preventive Services Taskforce
   www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan/prostate-cancer-screening-adults
   December 21, 2023 - flashes, and gynecomastia); surgical complications; and long-term harms Other outcomes Study Design … ║Sample size of >100. … ¶ Sample size of at least 1,000; uncontrolled studies only eligible if randomized, controlled trials

9. Folic Acid Supplementation for the Prevention of Neural Tube Defects: An Update of the Evidence (pdf file)
   www.uspreventiveservicestaskforce.org/home/getfilebytoken/y6xRBv7uSZY5bGCx7y48x7
   May 01, 2009 - The Table details the study design. … size, differen- tial measurement assessments, and differential response rates among case patients and … research design I: Properly conducted RCT II-1: Well-designed controlled trial without randomization … size (50–100 subjects) and a “medium” spectrum of patients Poor: Has fatal flaw, such as use of an … size Administration of reliable screening test Definition of ratings based on above criteria: Good:

10. Aspirin for the Primary Prevention of Cardiovascular Events: An Update of the Evidence (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/t6yV6ZMHngeWgmTsoMMefM
    March 01, 2009 - Excluded (n = 722) High-risk patients only: 331 Aspirin not evaluated: 294 Inappropriate study design … size (50–100 subjects) and a “medium” spectrum of patients. … size or very narrowly selected spectrum of patients. … size (50–100 subjects) and a “medium” spectrum of patients. … size or very narrowly selected spectrum of patients

11. Archived: Final Evidence Summary: Folic Acid to Prevent Neural Tube Defects: Preventive Medication | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary25/folic-acid-to-prevent-neural-tube-defects-preventive-medication-2009
    May 15, 2009 - The Table details the study design. … size, differential measurement assessments, and differential response rates among case patients and … size; few received multivitamins regularly in 6 months periconceptionally. … Preventive Services Task Force Hierarchy of Research Design and Quality Rating Criteriasize or very narrowly selected spectrum of patients Note: RCT = randomized, controlled trial

12. Final Research Plan: Abdominal Aortic Aneurysm: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan/abdominal-aortic-aneurysm-screening
    November 30, 2017 - Randomized, controlled trials KQs 2, 3: Randomized, controlled trials; large cohort studies (sample … size >1,000) KQ 5: Randomized, controlled trials; large cohort studies (sample size >1,000); vascular

13. Prevention TaskForce App Communications Toolkit | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/prevention-taskforce-app-communications-toolkit
    June 21, 2025 - Prevention TaskForce App Communications Toolkit Share to Facebook Share to X Share to WhatsApp Share to Email Print   Communications Toolkit The Prevention TaskForce (formerly ePSS) is an application designed to help primary care clinicians…

14. Archived: Evidence Update: Prostate Cancer: Screening, 2008 | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/article/prostate-cancer-screening-2008
    August 05, 2008 - Three fair-quality cohort studies with small-to-medium sample sizes, highly self-selected elderly patients … size (50–100 participants) and a "medium" spectrum of patients          Poor: Has fatal flaw, such … size (50–100 participants) and a "medium" spectrum of patients          Poor: Has fatal flaw, such … size or very narrow selected spectrum of patients RCT = randomized, controlled trial. … (n = 7): An excluded study design, or a design not capable of answering this key question (for example

15. Archived: Evidence Summary (Pregnant and Postpartum Women): Screening for Depression in Adults | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary-primary-care-screening-for-and-treatment-of/depression-in-adults-screening
    January 26, 2016 - size, control group remission rates, and time to follow-up were all confounded with each other, conclusions … The possibility of correlation between sample size and effect size raises the concern that the pooled … Furthermore, bias related to small sample sizes has been reported in the psychotherapy literature 90 … sizes are needed. … Design: study did not use an included design.

16. Benefits and Harms of Prostate-Specific Antigen Screening for Prostate Cancer: An Evidence Update (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/NhXnjZM5ubvygH5GrqDZHC
    August 01, 2008 - Three fair-quality cohort studies with small-to- medium sample sizes, highly self-selected elderly patients … size or very narrow selected spectrum of patients Diagnostic accuracy studies Criteria Screening test … size Administration of reliable screening test Definition of ratings based on above criteria Good: … size or very narrow selected spectrum of patients RCT � randomized, controlled trial. … ( n = 7): An excluded study design, or a design not capable of answering this key question (for

17. Draft Research Plan: Chronic Kidney Disease: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/draft-research-plan/chronic-kidney-disease-screening
    January 19, 2023 - characteristic curve Outcomes not described as included Setting No restrictions   Study Design … Good-quality or fair-quality; poor-quality only if better quality studies are lacking KQs 6–8: Sample … size of <50 patients Duration of followup <6 months Abbreviations: CKD=chronic kidney

18. Low-Dose Aspiring for the Prevention of Morbidity and Mortality from Preeclampsia: A Systematic Evidence Review fro the USPSTF (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/6W538pkN7ft6TsRMKfPWMJ
    May 27, 2014 - Three of the 4 trials with lower mortality in the placebo group had sample sizes of 100 or fewer per … Analysis of the effect of dosage also was confounded by unequal distribution of sample sizes in different … Pooled analysis of perinatal mortality from all trials, sorted by sample size. … Pooled analysis of placental abruption from all trials, sorted by sample size. … Pooled analysis of intracranial fetal bleeding from all trials, sorted by sample size.

19. Draft Research Plan: Unhealthy Alcohol Use in Adolescents and Adults: Screening and Behavioral Counseling Interventions | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/draft-research-plan/unhealthy-alcohol-use-adolescents-adults-behavioral-counseling-interventions
    February 01, 2024 - except for studies in pregnant women, for which shorter followup times will be included)   Study design … English Languages other than English Quality Fair or good quality Poor quality (according to design-specific

20. Final Research Plan: Prostate Cancer: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/final-research-plan/prostate-cancer-screening
    April 28, 2016 - screening studies have primarily detected early-stage cancer (90% to 96% of cancers detected). 2 , 3 ‡ Sample … size of at least 1,000 men; smaller samples sizes will be included only if randomized, controlled trials