Nationwide database of clinical and resource utilization information from pediatric inpatient stays

 

Key web links

Home page
http://www.hcup-us.ahrq.gov/kidoverview.jsp

Home page for all HCUP datasets
http://www.hcup-us.ahrq.gov/databases.jsp

Availability and description of data elements
http://www.hcup-us.ahrq.gov/db/nation/kid/kiddbdocumentation.jsp

Detailed review of KID and data access procedures:
http://www.hcup-us.ahrq.gov/db/nation/kid/KID_2006_Introduction.pdf

Online overview of all HCUP databases
http://www.hcup-us.ahrq.gov/overviewcourse.jsp

Dataset Summary

The Kids’ Inpatient Database (KID) is one in a family of databases and software tools developed as part of the Healthcare Cost and Utilization Project (HCUP). The KID has been released every 3 years since 1997, and includes data elements from hospital discharge abstracts for children in participating States. The KID includes data on diagnoses, procedures, admission and discharge status, demographics, charges and insurance status, length of stay, and hospital characteristics (such as teaching status and size). Data can be accessed after completion of a Data Use Agreement, online training, and an application kit. The KID can be purchased for $200 ($20 for Students) per data year.

Expert comments
The HCUP KID is the only hospital administrative dataset designed specifically to assess use of hospital services by newborns, children, and adolescents. It enables studies of specific conditions, procedures, and subpopulations that often cannot be assessed with other databases because children account for a relatively small proportion of hospital stays. With the KID, researchers and policymakers can study a variety of detailed topics, including the incidence of rare conditions, the economic burden associated with specific procedures or conditions, pediatric conditions most often related with particular outcomes, and the impact of health policy changes.

Dataset Details

Dataset owner / manager

Agency for Healthcare Research and Quality (AHRQ), under the Healthcare Cost and Utilization Project (HCUP)

Study and sample characteristics

The Kids’ Inpatient Database is a sample of discharges from all community, non-rehabilitation hospitals in States participating in HCUP, conducted every 3 years since 1997. KID data is drawn from the HCUP State Inpatient Databases (described elsewhere in this compendium). A sampling strategy is used to identify patients for inclusion in the KID, and weights are provided to generate national and regional estimates.
http://www.hcup-us.ahrq.gov/kidoverview.jsp

Participating States and other data can be found in:
http://www.hcup-us.ahrq.gov/db/nation/kid/KID_2006_Introduction.pdf


Major foci

Major types of data collected include:
• Primary and secondary diagnoses
• Primary and secondary procedures
• Admission and discharge status
• Patient demographics (e.g., gender, age, race, median income for ZIP Code)
• Expected payment source
• Total charges
• Length of stay
• Hospital characteristics (e.g., ownership, size, teaching status).

See:
http://www.hcup-us.ahrq.gov/kidoverview.jsp

The KID data files are also include provided with measures of disease severity and information on diagnosis and procedures groups designed to facilitate analyses.
http://www.hcup-us.ahrq.gov/db/nation/kid/KID_2006_Introduction.pdf

More detailed information on data elements can be found at:
http://www.hcup-us.ahrq.gov/db/nation/kid/kiddbdocumentation.jsp

See section on availability and description of data elements at:
http://www.hcup-us.ahrq.gov/db/nation/kid/Availability_of_KID_Data_Elements.pdf


Special supplements and resources

The HCUP Cost-to-Charge Ratio files that allow conversion of billed charges (available in the main KID database) to hospital costs.
http://www.hcup-us.ahrq.gov/db/state/costtocharge.jsp

The Hospital Market Structure File is a hospital-level file that contains measures of hospital market competition, allowing investigators to characterize the intensity of competition faced by specific hospitals under user-defined definitions of market area.
http://www.hcup-us.ahrq.gov/toolssoftware/hms/hms.jsp

The Kids’ Inpatient Database Trends (KID-Trends) File is a discharge-level file that provides trend weights consistently defined between 1997 and later years.
http://www.hcup-us.ahrq.gov/db/nation/kid/kidtrends.jsp


Links to other datasets

Data can be linked to the American Hospital Association Annual Survey, and some States provide identifiers allowing linkage to the Area Resource File.

Information on linking to AHA Annual Survey files provided at:
http://www.hcup-us.ahrq.gov/db/state/ahalinkage/aha_linkage.jsp

Papers published

For a complete list of publications from the HCUP databases, see http://www.ahrq.gov/data/hcup/hcupref.htm. Publications may be searched by database at http://hcup-us.ahrq.gov/reports/pubsearch/pubsearch.jsp

Examples of papers published using KID include:

Incidence and trends of pediatric ovarian torsion hospitalizations in the United States, 2000-2006.
Guthrie B, Adler M, Powell E,
Pediatrics. 2010 Mar;125(3):532-8.

Motor vehicle injury, mortality, and hospital charges by strength of graduated driver licensing laws in 36 States.
Pressley JC, Benedicto CB, Trieu L, Kendig T, Barlow B.
J Trauma. 2009 Jul;67(1 Suppl):S43-53.

Hospital utilization and costs among children with influenza, 2003.
Hassan F, Lewis TC, Davis MM, Gebremariam A, Dombkowski K.
Am J Prev Med. 2009 Apr;36(4):292-6. Epub 2009 Feb 7.

Trends in hospitalizations for neonatal jaundice and kernicterus in the United States, 1988-2005.
Burke BL, Robbins JM, Bird TM, Hobbs CA, Nesmith C, Tilford JM.
Pediatrics. 2009 Feb;123(2):524-32.

Preliminary assessment of pediatric health care quality and patient safety in the United States using readily available administrative data.
McDonald KM, Davies SM, Haberland CA, Geppert JJ, Ku A, Romano PS.
Pediatrics. 2008 Aug;122(2):e416-25.

Dataset accessibility and cost

Data are deidentified and available for use after purchase and completion of a Data Use Agreement, HCUP online training, and KID Application Kit. Data cost $200 per year of data ($20 for students).

Application kit
http://www.hcup-us.ahrq.gov/tech_assist/centdist.jsp

HCUP Data Use Agreement
http://www.hcup-us.ahrq.gov/tech_assist/dua.jsp

Help Desk

Additional support can obtained via
• e-mail: hcup@ahrq.gov
• Phone (toll free): 1-866-290-HCUP

See: http://www.hcup-us.ahrq.gov/techassist.jsp for details.

Request a consultation (SGIM members only)

Members of SGIM may request a one-time consultation with an expert in this dataset, for example to explore research ideas or to troubleshoot a problem or vexing question. Please click here for guidelines and the request process.