Data Source
We analyzed data from the Kids’ Inpatient Database (KID) to conduct a cross sectional analysis of hospital outcomes including mortality, length of stay and health care expenditure among pediatric CF hospitalizations. The KID is published triennially beginning in 1997 and is a nationally representative sample of pediatric hospitalizations from the Healthcare Cost and Utilization Project (HCUP) sponsored by the Agency for Healthcare Research and Quality. KID is the largest, all-payer hospitalization database in the United States and contains data from 22–46 states (depending on the year), and two to three million discharges.
The database contains 25 International Classification of Diseases, Ninth Revision (ICD-9) and up to 30 ICD, Tenth Revision (ICD-10) codes per discharge. It contains more than 75 clinical and nonclinical variables, clinical modification diagnostic and procedure codes, hospital characteristics, and out-comes. HCUP-KID assigns an individual-level population weight that allows an estimation of national case rates and trends. KID has been used in published studies of pediatric CF.