Results

Total Results: 712 records

Showing results for "design sample size".

41. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2019
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2019.jsp
    January 01, 2019 - claims data but that comprises as much as 30 percent of Medicare beneficiaries. 1 The NIS' large sample … size enables analyses of rare conditions, uncommon treatments, and special patient populations. … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … size. … This sample size was determined by AHRQ based on their experience with similar research databases.

42. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2014
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2014.jsp
    January 01, 2014 - The NIS' large sample size enables analyses of rare conditions, uncommon treatments, and special patient … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … a stratum is under-represented in the sampling frame, it will be oversampled to achieve the target sample … size. … This sample size was determined by AHRQ based on their experience with similar research databases.

43. HCUP Methods Series Calculating Nationwide Inpatient Sample (NIS) Variances for Data Years 2011 and Earlier
    hcup-us.ahrq.gov/reports/methods/2003_02.jsp
    January 01, 2003 - Top NIS Sample Design The final sample design is as follows. … | | ----------------------------------------------------- | Died during | Sample … Size | 92344 | | hospitalization | Weighted Size | 460748.768 | | … Control language specifies the selection methods, the desired sample size or sampling rate, and other … Manton, " Equivalent Sample Size" and "Equivalent Degrees of Freedom" Refinements for Inference Using

44. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2015
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2015.jsp
    January 01, 2015 - claims data but that comprises as much as 30 percent of Medicare beneficiaries. 3 The NIS' large sample … size enables analyses of rare conditions, uncommon treatments, and special patient populations. … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … size. … This sample size was determined by AHRQ based on their experience with similar research databases.

45. 2017-01 (pdf file)
    hcup-us.ahrq.gov/reports/methods/2017-01.pdf
    January 01, 2017 - size in calculating standard errors for certain readmission outcomes that are not population totals … “Equivalent sample size” and “equivalent degrees of freedom” refinements for inference using survey … The standard approach treats stratum sample sizes 𝑛𝑛𝑠𝑠 as random variables. … As such, variance calculations should account for the dependencies; importantly, the effective sample … size will be smaller, because there is inherently less information in correlated (as opposed to uncorrelated

46. MAINTAIN AND EXPAND (pdf file)
    hcup-us.ahrq.gov/db/nation/kid/reports/KID_2000_Design_Report.pdf
    January 01, 2000 - Sample Design Design Considerations The overall design objective was to select a sample of pediatric … HCUP KID 2000 (1/29/03) 4 Design of the HCUP KID, 2000 Table 3. … of the HCUP KID, 2000 SAMPLE DESIGN Design Considerations The overall design objective was to … HCUP KID 2000 (1/29/03) 20 Design of the HCUP KID, 2000 HCUP KID 2000 (1/29/03) 21 Design of the … Introduction Sample Design Design Considerations Sampling Frame Sampling Procedure Discharge Weights

47. Introduction to the NIS (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2022.pdf
    November 01, 2024 - that comprises as much as 48 percent of eligible Medicare beneficiaries in 2022.1 The NIS' large sample … size enables analyses of rare conditions, uncommon treatments, and special patient populations. … • The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … size. … This sample size was determined by AHRQ based on their experience with similar research databases.

48. Design of the HCUP KIDS' Inpatient Database (KID), 2003
    hcup-us.ahrq.gov/db/nation/kid/reports/KID_design_rpt_2003.jsp
    January 01, 2003 - Design of the HCUP KIDS' Inpatient Database (KID), 2003 … Design Considerations Changes to Sampling and Weighting Strategy Beginning with the 2000 KID … Sample Design Design Considerations The overall design objective was to select a sample of pediatric … Design Considerations The overall design objective was to select a sample of pediatric discharges … Return to Contents Internet Citation: 2003 KID Design Report.

49. Calculating Variances Using the 1999 Nationwide Inpatient Sample (pdf file)
    hcup-us.ahrq.gov/reports/methods/2015-09.pdf
    January 01, 2015 - .................................................................................... 3 NIS Sample Design … For the NIS data years 2012 and later, the final sample design is as follows. … Although the NIS sample design is not a cluster sample per-se, the sample is stratified on hospital … Discharges were sampled within each stratum at the rate necessary to achieve a sample size equal to … "Equivalent sample size" and "equivalent degrees of freedom" refinements for inference using survey

50. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2012
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2012.jsp
    January 01, 2012 - The NIS' large sample size enables analyses of rare conditions, uncommon treatments, and special patient … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … This sample size was determined by AHRQ based on their experience with similar research databases. … new NIS design will be about twice as precise as the old design. … This is by design.

51. INTRODUCTION TO THE HCUP NATIONAL INPATIENT SAMPLE (NIS), 2013
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2013.jsp
    January 01, 2013 - The NIS' large sample size enables analyses of rare conditions, uncommon treatments, and special patient … The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … This sample size was determined by AHRQ based on their experience with similar research databases. … new NIS design will be about twice as precise as the old design. … This is by design.

52. HEALTHCARE COST AND UTILIZATION PROJECT — HCUP (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/NISIntroduction2019.pdf
    September 01, 2021 - size enables analyses of rare conditions, uncommon treatments, and special patient populations. … • The new NIS retains a large sample size, which enables analyses of rare conditions, uncommon treatments … a stratum is under-represented in the sampling frame, it will be oversampled to achieve the target sample … size. … This sample size was determined by AHRQ based on their experience with similar research databases.

53. Microsoft Word - CaseforPOAIndicator_final_060806 _2_.doc (pdf file)
    hcup-us.ahrq.gov/reports/methods/2007_02.pdf
    January 01, 2007 - Year KID States Added to the Frame Number of KID States Number of KID Hospitals Sample Size … Detailed information on the KID design is available in the report, Design of the HCUP Kids’ Inpatient … Size Number of KID Discharges in the Universe 1997 AZ, CA, CO, CT, FL, GA, HI, IA, IL, KS, … Also, consistent with the increase in hospital sample size, the average discharge weight decreased by … be used, although the analyst might have to normalize the weights to sum to the sample size and provide

54. HCUP Methods Series Calculating National Inpatient Sample (NIS) Variances for Data Years 2012 and Later
    hcup-us.ahrq.gov/reports/methods/2015_09.jsp
    January 01, 2015 - Top NIS Sample Design For the NIS data years 2012 and later, the final sample design is as follows … Details about the present NIS sample design, including the rationale for changes from the previous NIS … Although the NIS sample design is not a cluster sample per-se, the sample is stratified on hospital … Discharges were sampled within each stratum at the rate necessary to achieve a sample size equal to 20 … "Equivalent sample size" and "equivalent degrees of freedom" refinements for inference using survey weights

55. 2014-04 (pdf file)
    hcup-us.ahrq.gov/reports/methods/2014-04.pdf
    January 01, 2014 - The sample size remains the same: 20 percent of discharges in the universe. … In our study, the overall sample size of 8 million was chosen for conformance with the current NIS design … so that sample size could be ruled out as a factor in comparing the performance among the alternative … An important consideration in reviewing these results is that the sample sizes vary substantially across … Consequently, RME estimates vary across DRGs in part because of the varying sample sizes.

56. Nisredesignfinalreport040914 (pdf file)
    hcup-us.ahrq.gov/db/nation/nis/reports/NISRedesignFinalReport040914.pdf
    June 11, 2014 - The sample size remains the same: 20 percent of discharges in the universe. … In our study, the overall sample size of 8 million was chosen for conformance with the current NIS design … so that sample size could be ruled out as a factor in comparing the performance among the alternative … An important consideration in reviewing these results is that the sample sizes vary substantially across … Consequently, RME estimates vary across DRGs in part because of the varying sample sizes.

57. INTRODUCTION TO THE HCUP NATIONWIDE INPATIENT SAMPLE (NIS), 2006
    hcup-us.ahrq.gov/db/nation/nis/NIS_Introduction_2006.jsp
    January 01, 2006 - The NIS’ large sample size enables analyses of rare conditions, such as congenital anomalies; uncommon … The sampling design consisted of a stratified, single-stage cluster sample. … Return to Introduction Hospital Sample Design Design Considerations The NIS is a stratified … This sample size was determined by AHRQ based on their experience with similar research databases. … While this approach was admittedly less efficient, the extremely large sample sizes yield reliable estimates

58. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2016
    hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2016.jsp
    January 01, 2016 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … The tutorial will be updated in the future to directly address the NASS sampling design. … estimates ( encounter universe ), tabulated in strata used in the sampling design. … Examine the strata with deficient ratios or sample sizes. … The NASS sampling design consists of a stratified, single-stage cluster sample.

59. 2003 HCUP Nationwide Inpatient Sample (NIS) Comparison Report
    hcup-us.ahrq.gov/db/nation/nis/reports/2003niscomparisonrpt.jsp
    May 01, 2016 - One of the most distinctive features of the NIS is that its large sample size allows for the study of … Although the smaller sample size rendered NHDS estimates less precise than NIS estimates, the complete … Because of the limited sample size, valid estimates were not available for all breakdowns of the NHDS … 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

60. THE HCUP NATIONWIDE AMBULATORY SURGERY SAMPLE (NASS) 2017
    hcup-us.ahrq.gov/db/nation/nass/NASS_Introduction_2017.jsp
    January 01, 2017 - The HCUP Sample Design tutorial is designed to help users learn how to account for sample design in … estimates ( encounter universe ), tabulated in strata used in the sampling design. … Examine the strata with deficient ratios or sample sizes. … The NASS sampling design consists of a stratified, single-stage cluster sample. … Census region was considered as an essential stratum to include in the design.