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Total Results: 426 records

Showing results for "design sample size".

81. Preventing Dental Caries in Children <5 Years: Systematic Review Updating USPSTF Recommendation (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/BM-D2tSCN9U8uuBFAufXaa
    August 01, 2013 - In addition to use of a nonrandomized design, other methodological short- comings in the poor-quality … Sample sizes ranged from 280 to 1146 REVIEW ARTICLE PEDIATRICS Volume 132, Number 2, August 2013 335 … Interventions Country; Setting; Fluoridation Status Age at Enrollment Sample Size F-U, y Mean Caries … Interventions Country; Setting; Fluoridation Status Age at Enrollment Sample Size F-U, y Mean Caries … Interventions Country; Setting; Fluoridation Status Age at Enrollment Sample Size F-U, y Mean Caries

82. Archived: Final Evidence Summary: Obesity in Children and Adolescents: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/final-evidence-summary39/obesity-in-children-and-adolescents-screening-2010
    January 15, 2010 - Two investigators independently quality rated the studies by using design-specific criteria ( Appendix … our previous USPSTF review, in which we found study concerns echoed by others, 45  including small sample … sizes, high attrition rates (among other quality issues), less-than-ideal outcome measures, and highly … indeterminate result in a reasonable manner Spectrum of patients included in study Sample … size Administration of reliable screening test The nature of the test being studied

83. Evidence Summary: Vision in Children Ages 6 Months to 5 Years: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/vision-in-children-ages-6-months-to-5-years-screening
    September 05, 2017 - Snellen chart) and 0.15 logMAR (between 1 and 2 lines). 40-42 Large treatment studies have calculated sample … size requirements based on the ability to detect a change of at least 0.1 logMAR between treatment groups … Sample sizes ranged from 63 75 to 4040. 70 , 91 About one-third of the studies included participants … Improving on ETDRS acuities: design and results for a computerised thresholding device.  … Screening Intervention vs Control Sample Size Age Female, No. (%) b Non-White, No (%) Main

84. Screening for Speech and Language Delay in Preschool Children: Recommendation Statement (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/ecWjjTgXCffjwPyqgNCEpR
    February 01, 2006 - RCTs that demonstrated improved speech and language outcomes had several limitations, such as small sample … size, failure to consider potential confounders, the reporting of short-term outcomes, and heterogeneous … effects on health outcomes because of limited number or power of studies, important flaws in their design

85. Screening for Hepatitis C Virus Infection in Adults: A Systematic Review for the USPSTF (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/ZrLh7o2TpPpY9WXXWbXbGk
    January 01, 2013 - We also included large studies (sample size �1000 partic- ipants) reporting harms associated with diagnostic … Studies of Alternative Screening Strategies Study, Year; Country (Reference) Study Design Sample Size … negative psychological and social effects, but results are difficult to interpret because of small sample … sizes and methodological shortcomings, including no unscreened comparison group. … Author Contributions: Conception and design: R. Chou, J.M. Guise.

86. Archived: Evidence Summary: Folic Acid for the Prevention of Neural Tube Defects: Preventive Medication | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/folic-acid-for-the-prevention-of-neural-tube-defects-preventive-medication-january-2017
    January 10, 2017 - interpretation of study findings, results are presented first by study design, second by data source … flaws and inadequate sample size in these studies are also important considerations. … , 98 for wrong intervention, 1 for wrong sample size, 68 for wrong language/non-English, and 5 that were … Wrong study design: study did not include an eligible design. … Wrong sample size: study had 50 or fewer participants.

87. 827Cwgymvawpvovg Syjpf (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/827CwGYMVawpVoVg_syJpF
    October 01, 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; sample … sizes ranged from 45 to 1164 participants. … sizes ranged from 45 to 1164 participants. … Evidence is insufficient because of: the limited number or size of studies; important flaws in study design

88. Screening Children for Family Violence: A Review of the Evidence (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/qCaKmh7ayuG9VP2vj646pQ
    March 01, 2004 - From each included study, we abstracted the study design, number of participants, setting, 3 Screening … Agency staff and USPSTF members participated in the initial design of the study and reviewed interim … • 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.

89. Archived: Evidence Summary: Blood Pressure in Adults (Hypertension): Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary15/blood-pressure-in-adults-hypertension-screening-2007
    October 15, 2007 - For harms of early treatment, 2 reviewers abstracted information on sample size, entry criteria, demographic … characteristics, comorbid conditions, study design, treatment group allocation, reports of adverse effects … that were not on hypertension, 62 that included a high-risk population, 31 that did not meet study design … Year (Reference) Study Objective Sample Characteristics Inclusion Criteria Design

90. Screening for Skin Cancer: U.S. Preventive Services Task Force Recommendation Statement (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/YFZy6kszQPq5tNGdZC25XC
    July 26, 2016 - Evidence is insufficient because of the limited number or size of studies. important flaws in study design … possible, a high-quality case- control study could provide sufficient power without requiring a large sample … size. … However, this study design has limitations in the ability to create an appropriate comparison group,

91. Evidence Summary: Breastfeeding: Primary Care Behavioral Counseling Interventions | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/breastfeeding-primary-care-interventions
    April 11, 2025 - One reviewer abstracted data about each study’s design, population, interventions, and outcomes; a second … Sample sizes for the included trials ranged from 39 to 9675 participants, and the median sample size … pregnancy: a cluster-randomized controlled trial to prevent excessive gestational weight gain—rationale and design … Study design: Study was not a randomized clinical trial.

92. Anxiety Screening: Evidence Report and Systematic Review for the US Preventive Services Task Force (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/CXDusYW7s2xdypXMpnW9sw
    June 20, 2023 - excluded for KQ3 9 Intervention 7 Population 7 Setting 4 Aim 34 Outcomes 3 Comparator 2 Quality 2 Design … Design: Study did not use an included design. … antidepressants are addressed in a separate publication.8 Evidence in the RCTs was limited due to small sample … sizes (eTable 16 in the Supplement). … Concept and design: All authors.

93. Behavioral Counseling to Promote a Healthful Diet and Physical Activity for CVD Prevention in Adults Without Known CVD Risk Factors: Updated Evidence Report and Systematic Review for the USPSTF (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/DTRggkjEPQ5-ALArTjrhKT
    July 11, 2017 - Characteristics of All Included Trials Source Study Qualitya Country Sample Size, Population Description … Characteristics of All Included Trials (continued) Source Study Qualitya Country Sample Size, Population … Characteristics of All Included Trials (continued) Source Study Qualitya Country Sample Size, Population … Characteristics of All Included Trials (continued) Source Study Qualitya Country Sample Size, Population … Characteristics of All Included Trials (continued) Source Study Qualitya Country Sample Size, Population

94. Interventions to Support Breastfeeding: Updated Evidence Report and Systematic Review for the US Preventive Services Task Force (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/SJbAXUAQTv2GWemMuBab6W
    April 08, 2025 - One reviewer abstracted data about each study’s design, popu- lation, interventions, and outcomes; a … Sample sizes for the included trials ranged from 39 to 9675 participants, and the median sample size … 13 Relevance 11 Quality 167 Articles excluded for KQ2 23 Quality 37 Outcomes 30 Setting 24 Study design … Study design: Study was not a randomized clinical trial. … Concept and design: All authors. Acquisition, analysis, or interpretation of data: All authors.

95. Vitamin D With or Without Calcium Supplementation for Prevention of Cancer and Fractures: An Updated Meta-analysis for the U.S. Preventive Services Task Force (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/6L2obA88s86MoZDbWtMPTU
    December 01, 2011 - Questions and Summary of Evidence Reviewed KQs and Comparisons of Interest Outcomes Studies (Total Sample … Size) Methodologic Quality Follow-up Duration Main Findings Supplement or Appendix Figure Providing … Size) Methodologic Quality Follow-up Duration Main Findings Supplement or Appendix Figure Providing … size is specific to the comparison. … The size of the circle is proportional to the sample size of the RCT.

96. Evidence Summary: Food Insecurity: Screening | United States Preventive Services Taskforce
    www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary/food-insecurity-screening
    March 11, 2025 - Risk ratios are shown in a forest plot but not pooled due to the heterogeneity in study design, intervention … Design and implementation of a clinic-based food pharmacy for food insecure, uninsured patients to support … Design: Study did not use an included design. … Study design Population Identified via screening b Provides free food Provides vouchers Provides … Insecurity Study design

97. -Umtbplhkqkcqcbeq3Gtuj (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/-UMtbPLHkQKcQCbeQ3gTuJ
    September 01, 2013 - This difference also suggests possible inadequate randomization or inadequate sample size, be- cause … Furthermore, differences in popula- tion characteristics and systems of medical care and the small sample … sizes used in the European studies may limit applicability to a U.S. population. … 146 Wrong publication type: 539 Non–English-language: 304 Wrong outcome: 98 Published before 2000: 22 Sample … size too small: 44 Follow-up too short: 1 Cohort studies (n = 13) Screening key questions (n = 54)

98. Serologic Screening for Genital Herpes: An Updated Evidence Report and Systematic Review for the USPSTF (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/aHpXYasjc3n6zhaTtoWMwK
    August 01, 2016 - Size Eligible Serologic Tests Population Recruitment Setting; Country Age, Mean (SD), y Sex and … Size Eligible Serologic Tests Population Recruitment Setting; Country Age, Mean (SD), y Sex and … sizes were small, and overall attrition was >20% in both trials. … sizes were small, and overall attrition was >20% in both trials. … Concept and design: Feltner, Grodensky, Ebel, Ashok, Jonas.

99. Screening for Impaired Visual Acuity in Older Adults: Updated Evidence Report and Systematic Review for the USPSTF (pdf file)
    www.uspreventiveservicestaskforce.org/home/getfilebytoken/DCfAJZvNDzSYu7NqLJX2bv
    March 01, 2016 - Size Reference Standard Target Vision Condition Screening Test Sensitivity (95% CI) Specificity (95% … Size Reference Standard Target Vision Condition Screening Test Sensitivity (95% CI) Specificity (95% … Size Reference Standard Target Vision Condition Screening Test Sensitivity (95% CI) Specificity (95% … sizes were relatively small (n = 94 and 300). … Study concept and design: Chou.

100. Archived: Evidence Summary: Iron Deficiency Anemia in Pregnant Women: Screening and Supplementation | United States Preventive Services Taskforce
     www.uspreventiveservicestaskforce.org/uspstf/document/evidence-summary22/iron-deficiency-anemia-in-pregnant-women-screening-and-supplementation-september-2015
     March 30, 2015 - Data Extraction and Quality Rating One investigator abstracted details about study design, patient … Due to methodological shortcomings in the studies and differences across studies in design, interventions … Sample sizes ranged from 45 to 1164 participants, although only 2 studies had more than 500. 27 , 28 … Only 5 of the included studies (in 6 publications) reported power or sample size calculations. 25 , … size of 1 study was calculated to detect a 7% difference in the proportion of infants born small for