The National (Nationwide) Inpatient Sample (NIS) is the largest publicly available all-payer inpatient care database in the United States, containing data on more than seven million hospital stays. Its large sample size is ideal for developing national and regional estimates and enables analyses of rare conditions, uncommon treatments, and special populations.
Available to IU Researchers:
Documentation from HCUP
HCUP's NIS Database Documentation contains a great deal of relevant documentation and other resources. In particular, you might want to review:
The Nationwide Ambulatory Surgery Sample (NASS) is the largest all-payer ambulatory surgery database in the U.S. and produces national estimates of major ambulatory surgery encounters in hospital-owned facilities. The NASS contains clinical and resource-use information that is included in a typical hospital-owned facility record, including patient characteristics, clinical diagnostic and surgical procedure codes, disposition of patients, total charges, expected source of payment, and facility characteristics.
Available to IU Researchers
Documentation from HCUP
HCUP's NASS Database Documentation contains a great deal of relevant documentation and other resources. In particular, you might want to review:
The Nationwide Emergency Department Sample (NEDS) produces national estimates about emergency department (ED) visits across the country. The NEDS describes ED visits, regardless of whether they result in admission. One of the most distinctive features of the NEDS is its large sample size, which allows for analysis across hospital types and the study of relatively uncommon disorders and procedures.
Available to IU Researchers
Documentation from HCUP
HCUP's NEDS Database Documentation contains a great deal of relevant documentation and other resources. In particular, you might want to review:
