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Showing results for "design sample size".

461. STATISTICAL BRIEF #442: Changes in Osteoporosis Medication Use and Expenditures among Women (Age ≥ 50), United States, 2000 to 2011
     meps.ahrq.gov/data_files/publications/st442/stat442.shtml
     June 01, 2014 - Data from 2000–2001 to 2010–2011 are pooled to increase sample sizes and the precision of estimates; … References For a detailed description of the MEPS survey design, sample design, and methods used … Design and Methods of the Medical Expenditure Panel Survey Household Component . … Sample Design of the 1996 Medical Expenditure Panel Survey Household Component . … Design Strategies and Innovations in the Medical Expenditure Panel Survey.

462. 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:

463. Overview of U.S. Hospital Stays in 2016: Variation by Geographic Region (pdf file)
     hcup-us.ahrq.gov/reports/statbriefs/sb246-Geographic-Variation-Hospital-Stays.pdf
     February 01, 2018 - Because of the large sample sizes, we focus on the size of differences between estimates rather than … The redesign incorporates two critical changes: • Revisions to the sample design—starting with 2012 … by reducing sampling error: for many estimates, confidence intervals under the new design are about … half the length of confidence intervals under the previous design. … The unweighted sample size for the 2016 NIS is 7,135,090 (weighted, this represents 35,675,421 inpatient

464. Improving Medication Management Practices and Care Transitions through Technology - 2011 | Digital Healthcare Research
     digital.ahrq.gov/ahrq-funded-projects/improving-medication-management-practices-and-care-transitions-through/annual-summary/2011
     January 01, 2011 - The first analysis, which has been completed, used the full sample size of all of the patients who were … analysis, which is currently in progress, is looking at the same endpoints as the first analysis; however, sample … size is limited to the patients that participated in an interview.

465. Targeting Medication Nonadherence Using Mobile Phone-Based Tailored Messaging - FInal Report (pdf file)
     digital.ahrq.gov/sites/default/files/docs/citation/r36hs021976-gatwood-final-report-2014.pdf
     January 01, 2014 - First, the sample size was far smaller than had been anticipated and desired, limiting our statistical … It should be noted that these results should be taken with caution as the small sample size of subjects … More importantly, larger sample sizes must be recruited so that more reliable and statistically robust … messages used may have had an effect on the study population but were unobserved due to the small sample … size or may have been difficult to measure due to the high prevalence of insulin.

466. INTRODUCTION TO THE HCUP KIDS' INPATIENT DATABASE (KID), 2009
     hcup-us.ahrq.gov/db/nation/kid/kid_2009_introduction.jsp
     January 01, 2009 - The KID's large sample size enables analyses of rare conditions, such as congenital anomalies and uncommon … The HCUP Sampling Design tutorial is designed to help users learn how to account for sample design … reports on Design of the Kids’ Inpatient Database found on the HCUP-US Website . … Starting with the 2006 KID, the design information was incorporated into this report. … Hospital Sample Design Design Considerations The overall design objective was to select a sample

467. 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

468. C:\unzipped\Methods Series Reports to Convert\Comparison_Report_NIS4 1995.wpd (pdf file)
     hcup-us.ahrq.gov/reports/methods/Comparison_Report_NIS41995Final.pdf
     December 21, 1998 - See Design of the HCUP Nationwide Inpatient Sample, Release 4, for more details on the design of the … A significance test was not performed because a valid standard error was not available. b The NHDS sample … size was too small to calculate a valid estimate of standard error … size was too small to calculate a valid estimate of standard error … size was too small to calculate a valid estimate of standard error

469. - (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/cystic-fibrosis-hgh_appendixes.pdf
     January 01, 2009 - Characteristics Study Design  RCT – Parallel  Obs – Registry  RCT – Crossover  Case Report … Year;Volume:Page): Design Characteristics Study Design  RCT – Parallel  Obs – Registry  RCT … Each study’s mean, standard deviation, and sample size is taken into account to determine its level … For example, a study with a large sample size will have a greater impact on the composite endpoint … than a similar study with a small sample size.

470. Disposition of Comments Report for Evidence Report/Technology Assessment No. 214 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/smoking-pregnancy-infants_disposition-comments.pdf
     February 25, 2014 - = 0.30) the sample size per E + C Group. … The justification for this unacceptable sample size criteria in the Report makes no sense. … (See CDC Epi-Info/Estimation of sample sizes + Fleiss). … Although it is commonly used, a minimum sample size of 50 has no intrinsic value as a cutoff. … The 29 “Good + Fair” studies, excluding the deleted evaluations with small sample sizes, would be the

471. STATISTICAL BRIEF #393: Expenditures for Heart Disease among Adults Age 18 and Older: Estimates for the U.S. Civilian Noninstitutionalized Population, 2009
     meps.ahrq.gov/data_files/publications/st393/stat393.shtml
     November 01, 2012 - Due to sample size, other non-Hispanic (American Indian/Alaska Native non-Hispanic and multiple races … Design and Methods of the Medical Expenditure Panel Survey Household Component . … Sample Design of the 1996 Medical Expenditure Panel Survey Household Component . … Design Strategies and Innovations in the Medical Expenditure Panel Survey.

472. Venous-Ulcers-Treatment-Future Research (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/venous-ulcers-treatment-future_research.pdf
     January 01, 2014 - Design or Methodology Gap Study Design Estimation of sample size to achieve sufficient power; conduct … Both studies were more than 20 years old, had small sample sizes, and found no benefit for systemic … Standards for Estimating Proper Sample Sizes Well-developed statistical methods for estimating the size … …for estimating proper sample sizes. … …for estimating proper sample sizes. 0 14 Conducting…for recruiting patients.

473. Transparency of Reporting Requirements: Effectiveness of Treatments Options for the Prevention of Complications and Treatment of Symptoms of Diabetic Peripheral Neuropathy (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/transparency-neuropathy_research-protocol.pdf
     September 01, 2016 - To estimate the number completed, we then added criteria to limit by study design, status and crudely … Preliminary data extraction elements: Trial design Design (randomized?) … Reasons for delays (if any) Population Total enrollment, sample size in each arm, drop-outs Participants … • Comparison of prespecified statistical plan • Sample sizes, total and per arm.

474. Evidence Report on the (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/depression-treatment-ssri_research-protocol.pdf
     June 15, 2010 - Sample size: There are no restrictions for study sample size. … , sample size, sample size calculation or power estimate); clinical indications; and study duration … episodes of depression, age of first diagnosis, etc.), study outcomes (both of benefit and of harm), sample … Source: www.effectivehealthcare.ahrq.gov Published Online: June 15, 2010 withdrawals; 2) sample … size; 3) high versus low overall quality; and 4) prospective determination of “treatment failure.)

475. Psn-Pdf (pdf file)
     psnet.ahrq.gov/node/33737/psn-pdf
     September 01, 2012 - With its large sample size and rigorous study design, the 2012 National Sample Survey of Nurse Practitioners

476. Bindels R et al. 2003 "The efficacy of an automated feedback system for general practitioners." | Digital Healthcare Research
     digital.ahrq.gov/health-it-tools-and-resources/workflow-assessment-health-it-toolkit/research/bindels-r-et-al-2003
     January 01, 2003 - DESIGN: We used a randomised controlled trial with balanced block design. … Study Design Randomized controlled trial (RCT) Study Participants Of the 90 GPs who were randomly

477. Layout 1 (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/related_files/registries-guide_executive.pdf
     April 01, 2007 - Once these key design items have been determined, the registry design should be reviewed to evaluate … The term “quality” can be applied to registries to describe the confidence that the design, conduct, … Design • The literature has been reviewed to guide appropriate data collection. … effect, should one exist, or achieve a desired level of precision is specified, whether or not the sample … size requirement is met

478. STATISTICAL BRIEF #78: Children's Usual Source of Care: United States, 2002
     meps.ahrq.gov/data_files/publications/st78/stat78.shtml
     May 01, 2005 - References For a detailed description of the MEPS-HC survey design, sample design, and methods used to … Design and Methods of the Medical Expenditure Panel Survey Household Component . … Sample Design of the 1996 Medical Expenditure Panel Survey Household Component . … Design Strategies and Innovations in the Medical Expenditure Panel Survey.

479. Acs-Pci-Adjunctive-Devices Research-Protocol (pdf file)
     effectivehealthcare.ahrq.gov/sites/default/files/pdf/acs-pci-adjunctive-devices_research-protocol.pdf
     July 01, 2010 - that enrolled <500 subjects will be excluded, since numerous RCTs already exist within this smaller sample … size range, observational studies in this range contain small initial experiences not representative … Observational studies will be assessed for sample size, participant selection method, exposure measurement … This can be assessed through the evaluation of both design and study limitations. … duration with clinically relevant treatment modalities, assessed adverse events, had an adequate sample

480. 2004 HCUP Nationwide Inpatient Sample (NIS) Comparison Report
     hcup-us.ahrq.gov/db/nation/nis/reports/2004niscomparisonrpt.jsp
     May 01, 2016 - One of the most distinctive features of the NIS is that its large sample size allows for the study of … We must emphasize that the NIS provides a large sample size that tends to yield estimates with much smaller … Because NIS estimates have greater precision — the result of the large sample size — it may be preferred … Where a comprehensive geographic representation is more important than a large sample size, and the question … (a) Because of very small sample size, the NHDS estimate and standard error were unreliable and not reported