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United States Nationwide Inpatient Sample 2007

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General Info
Original or alternative title 
HCUP Nationwide Inpatient Sample 2007
Geography 
Coverage type 
Country
Time period covered 
01/2007 - 12/2007
Series or system 
United States Nationwide Inpatient Sample
Data type
Administrative record:
  • Discharge
  • Inpatient
  • Nationally representative
Summary 

The Nationwide Inpatient Sample (NIS) is a database of hospital inpatient stays. It was developed by the Healthcare Cost and Utilization Project (HCUP), and is meant to approximate a 20% sample of United States community hospitals. Variables include patient demographics, diagnosis and procedure codes, admission and discharge status, length of stay, expected payer, total charges, and hospital characteristics.

The 2007 NIS release includes data from 40 states. When the NIS began in 1988, eight states were included. As of 2011, data from 46 states were included in the NIS. The 2007 release includes information on all inpatient stays from over 1,000 hospitals, totaling approximately 8 million records. 

Citation
Suggested citation 
Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality (AHRQ). United States Nationwide Inpatient Sample 2007. Rockville, United States: Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality (AHRQ).