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Showing results for "design sample size".

1341. 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.

1342. 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.

1343. 2005 HCUP Nationwide Inpatient Sample (NIS) Comparison Report
      hcup-us.ahrq.gov/db/nation/nis/reports/2005niscomparisonrpt.jsp
      November 01, 2015 - Where a comprehensive geographic representation is more important than a large sample size, and the question … The NIS provides a large sample size that tends to yield estimates with much smaller standard errors … Because NIS estimates have greater precision – the result of the large sample size – it may be preferred … (a) Because of very small sample size, the NHDS estimate and standard error were unreliable and not reported … (a) Because of very small sample size, the NHDS estimate and standard error were unreliable and not reported

1344. 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:

1345. Kim J et al. 2005 "Development and initial testing of a computer-based patient decision aid to promote colorectal cancer screening for primary care practice." | Digital Healthcare Research
      digital.ahrq.gov/health-it-tools-and-resources/workflow-assessment-health-it-toolkit/research/kim-j-et-al-2005
      January 01, 2005 - Informational resource Type of Health IT Functions The educational resource is modular in design … Study Design Only postintervention (no control group) Study Participants A convenience sample

1346. Trends in Hospital Inpatient Stays by Age and Payer, 2000-2015 (pdf file)
      hcup-us.ahrq.gov/reports/statbriefs/sb235-Inpatient-Stays-Age-Payer-Trends.pdf
      December 01, 2016 - 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 change in sample design for 2012 necessitates recomputation of prior years' NIS data to enable analyses … For a detailed description of HCUP and more information on the design of the National (Nationwide) Inpatient

1347. 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

1348. STATISTICAL BRIEF #221: Dental Coverage of Children and Young Adults under Age 21, United States, 1996 and 2006
      meps.ahrq.gov/data_files/publications/st221/stat221.shtml
      September 01, 2008 - References For a detailed description of the MEPS-HC 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. … Sample Design of the Medical Expenditure Panel Survey Household Component, 1998-2007 .

1349. - (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.

1350. 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.)

1351. An All-Payer View of Hospital Discharge to Postacute Care, 2013 (pdf file)
      hcup-us.ahrq.gov/reports/statbriefs/sb205-Hospital-Discharge-Postacute-Care.pdf
      November 01, 2015 - The redesign incorporates two critical changes:  Revisions to the sample design—starting with … 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 change in sample design for 2012 necessitates recomputation of prior years' NIS data to enable analysis … Hospitals, 2011 For a detailed description of HCUP and more information on the design of the National

1352. 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.

1353. Patient Residence Characteristics of Opioid-Related Inpatient Stays and Emergency Department Visits Nationally and by State, 2014 (pdf file)
      hcup-us.ahrq.gov/reports/statbriefs/sb226-Patient-Residence-Opioid-Hospital-Stays-ED-Visits-by-State.pdf
      December 01, 2016 - size was too small to calculate the rate) a The number of States represented in the top and bottom … size was too small to calculate the rate) a The number of States represented in the top and bottom … size was too small to calculate the rate) a Opioid-related inpatient rates are per 100,000 population … size was too small to calculate the rate) a Opioid-related ED visit rates are per 100,000 population … half the length of confidence intervals under the previous design.

1354. 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

1355. Randeree E et al. 2007 "Exploring physician adoption of EMRs: a multi-case analysis." | Digital Healthcare Research
      digital.ahrq.gov/health-it-tools-and-resources/workflow-assessment-health-it-toolkit/research/randeree-e-et-al-2007
      January 01, 2007 - Study Design Pre-postintervention (no control group) Study Participants Study participants

1356. Disposition of Comments for Child Exposure to Trauma: Comparative Effectiveness of Interventions Addressing Maltreatment (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/trauma-interventions-maltreatment-child_disposition-comments.pdf
      April 15, 2013 - Affiliation Section Comment Response Peer Reviewer #2 General On page 62 of the report, under Study Design … size, research conducted by intervention developers ("allegiance effect"), high rate and differential … The authors do identify one of the major limitation of small sample sizes in that it is difficult to … sizes. … size to extrapolate and major conclusions about the field—especially treatments that may benefit traumatized

1357. Comments to Effective Heath Care Program Draft Documents (pdf file)
      effectivehealthcare.ahrq.gov/sites/default/files/related_files/registries-guide-2nd-edition_disposition-comments.pdf
      March 03, 2010 - Is this a general comment, or a specific comment on inadequate sample size? … Is this a general comment, or a specific comment on inadequate sample size, inadequate outcome definition … Some information on background rates is needed to do sample size calculations, but the information may … size. … There is a strong interplay between representativeness, patient recruitment, sample size and power,

1358. AHRQ Statistical Brief #502: Characteristics of Practices Used as Usual Source of Care Providers during 2015-Results from the MEPS Medical Organizations Survey (pdf file)
      meps.ahrq.gov/data_files/publications/st502/stat502.pdf
      April 01, 2017 - References For a detailed description of the MEPS HC 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. … Sample Design of the Medical Expenditure Panel Survey Household Component, 1998–2007.

1359. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
      hcup-us.ahrq.gov/db/nation/kid/KID_2009_Introduction.pdf
      January 01, 2009 - The KID's large sample size enables analyses of rare conditions, such as congenital anomalies and uncommon … Detailed information on the design of the KID prior to 2006 is available in the year-specific special … The HHCUP Sampling DesignH tutorial is designed to help users learn how to account for sample design … Variance estimates must take into account both the sampling design and the form of the statistic. … reports on Design of the Kids’ Inpatient Database found on the HHCUP-US WebsiteH.

1360. eHealth Blood Pressure Control Program (eHealth BP) - Final Report (pdf file)
      digital.ahrq.gov/sites/default/files/docs/publication/r21hs018238-eaton-final-report-2012.pdf
      January 01, 2012 - Nine-month eHealth BP Home Blood Pressure Monitoring Study Design. … 12) 66.7 72.7 Change in % before and after Web +12.8 +18.2 Based upon these data, we performed a sample … size calculation for α=.05, ß=.80, and determined we would need 96 individuals in each arm for a simple … previously uncontrolled at levels consistent with other studies of HBPM and case management but the small sample … size and quasi-experimental design require a larger more rigorous study design to test effectiveness