HCUP e-News: the electronic newsletter of the Healthcare Cost and Utilization Project

Spring 2019
Issue #58


News and Announcements: Notable news from HCUP
Databases and Products: New database and product releases
Publication Spotlights: Recent works incorporating HCUP data and tools
HCUP Q&A: Answers to your HCUP questions
HCUP Events: Upcoming HCUP conferences and meetings

Missed the last e-News? Read it on the HCUP-US Web site.

News and Announcements

HCUP Fast Stats Data Update!

AHRQ has released new information in HCUP Fast Stats—Trends in Inpatient Stays. This section of the larger National Hospital Utilization and Costs topic examines national trends in inpatient utilization, costs, and mortality across a variety of patient characteristics. The update adds national statistics for 2016 to this section of Fast Stats.

For additional information, please refer to the Fast Stats Frequently Asked Questions page or contact HCUP User Support.

2016 National Inpatient Sample (NIS) Data Now Available on HCUPnet

Nationwide statistics from the 2016 NIS now have been added to HCUPnet, the free, online query system based on HCUP data.

HCUPnet provides health care statistics and information for hospital inpatient, emergency department, and ambulatory settings, as well as population-based health care data on counties.

This is just one of many updates the tool has received over the last few months. Other additions include graphs of two-way statistics, inclusion and refinement of ICD-10-CM/ICD-10-PCS queries, and aggregation of community-level statistical tables by 3-year increments.

To check out the updates and start your own query, visit HCUPnet today at https://hcupnet.ahrq.gov/.

Learn About HCUP at April 17 and 24 Webinars—Required Registration Opens April 10

Webinars introducing and explaining HCUP will be held on April 17 and 24. On April 17, Overview of the HCUP Databases will include an introduction to the HCUP family of databases and a discussion of how to obtain and access the data as well as other HCUP resources. On April 24, Overview of the HCUP Products and Tools will cover the use of HCUP software tools and supplemental files, such as HCUPnet and Fast Stats, to facilitate and augment research.

The webinars are 1 hour long and open to the public. Each webinar requires separate advance registration, which will open on April 10. Additional details on the webinars are posted on the HCUP Workshops and Webinars page.

10th Anniversary: HCUP's Outstanding Article of the Year (AOTY) Award

A record number of nominations were received for the 10th Annual AHRQ-AcademyHealth Outstanding AOTY Award. Applications currently are being reviewed for the Clinical and Policy-focused honors, which will recognize two researchers published in peer-reviewed journals in 2018 who used HCUP databases to explore and address health care research topics and issues.

Award recipients will receive certificates and present posters of their work during AcademyHealth's 2019 Annual Research Meeting Exit Disclaimer on June 2–4 in Washington, DC. AHRQ will contact the winning authors via email by Wednesday, April 3, 2019.

For more information on the award and past recipients, please visit the HCUP User Support (HCUP-US) Web site at https://www.hcup-us.ahrq.gov/news/awards.jsp.

Databases and Products

Recently Released: 2016 and 2017 State Databases

Since December 2018, the following State Databases have been released:

Complete listings of available databases by year can be found in the Database Catalog on the HCUP-US Web site. Databases can be purchased online through the HCUP Central Distributor, and aggregated statistics for selected States can be accessed via HCUPnet.

Publication Spotlights

New HCUP Statistical Briefs Posted on HCUP-US

Since December 2018, the following HCUP Statistical Briefs have been released:

To access these and other Statistical Briefs, please visit the Statistical Briefs page on the HCUP-US Web site.

Publications Using HCUP Data

Kim LK, Yeo I, Cheung JW, et al. Thirty-day readmission rates, timing, causes, and costs after ST-segment–elevation myocardial infarction in the United States: a National Readmission Database analysis 2010-2014. J Am Heart Assoc. 2018;7(18):e009863.

This study used the 2010–2014 Nationwide Readmissions Database (NRD) to investigate contemporary causes, timing, and cost of 30-day readmissions after ST-segment-elevation myocardial infarction. The article abstract is available via PubMed.

Hottinger DG, Nasr I, Canner, JK, et al. Incidence, distribution, and cost of lawn-mower injuries in the United States, 2006-2013. Public Health Rep. 2018 Sep/Oct;133(5):570-7.

This study used the 2006-2013 Nationwide Emergency Department Sample (NEDS) to examine the incidence, distribution, types and severity, and emergency department (ED) and hospitalization charges of lawn-mower injuries among all age groups across the United States. The article abstract is available via PubMed.

To read additional recently published articles featuring HCUP data, please visit the Research Spotlights page on the HCUP-US Web site.


Question: I am interested in conducting a trend analysis of pediatric discharges now that the 2016 Kids’ Inpatient Database (KID) is available. Before I get started, I have a few questions:


Because the KID is not created annually, I am wondering whether it possible to substitute another HCUP database for the years that the KID is not available. If so, which HCUP database should I use?

You are correct. The KID includes data for a single calendar year, or January to December of the release year. If you are interested in pediatric discharges for the interim years, we recommend using the NIS, which includes both pediatric and adult records. Researchers often use the KID for available years and fill in the intervening years with data from the NIS for trend analyses.

I am interested in conducting an analysis on a specific subpopulation in the KID, but I am not sure how to approach a trend analysis for a subpopulation of interest. Is there any issue with subsetting each individual data year of the KID prior to combining the multiple years to examine trends?

We do not see an issue with subsetting each year of the KID prior to combining multiple years as long as each subset includes at least one (possibly dummy) record for each hospital. This is done to ensure correct standard errors. For additional information on conducting subpopulation analyses with the KID, refer to HCUP Method Series Report #2005-07, Calculating Kids' Inpatient Database (KID) Variances.

Are there any other issues that I should consider when working with the KID longitudinally?

Yes, the following issues are worth considering when working with the KID longitudinally to analyze trends:

HCUP Events

For a complete list of HCUP presentations and events, visit the HCUP Events Calendar.

The HCUP e-News is available online at the HCUP-US Web site and distributed via the HCUP Mailing List.

For more information and questions regarding the HCUP e-News, please email hcup@ahrq.gov