Nationwide Inpatient Sample

Bateman BT, Schumacher HC, Boden-Albala B, Berman ME, Mohr JP, Sacco RL, Pile-Spellman J. Eactors associated with in-hospital mortality after administration of thrombolysis in acute ischemic stroke patients An analysis of the nationwide inpatient sample 1999 to 2002. Stroke. 2006 37 440-446. 

Dubinsky R, Lai SM. Mortality of stroke patients treated with thrombolysis Analysis of nationwide inpatient sample. Neurology. 2006 66 1742-1744. 

Healthcare Cost and Utilization Project (HCUPnet). Rockville, MD Agency for Healthcare Research and Quality. URL http // www.hcup.ahrq.gov. Family of healthcare databases and software tools based on statewide data collected by individual hospitals and service providers across the United States. Databases include the Nationwide Inpatient Sample (NIS), the Kids Inpatient Database (KID), the State Inpatient Databases (SID), the State Ambulatory Surgery Databases (SASD), and the State Emergency Department Databases (SEDD). Searchable by diagnosis, procedure, and ICD codes. Available online. 

In partnership with data organizations in 37 states, AHRQ sponsors the Nationwide Inpatient Sample (NIS), a data bank of the Healthcare Cost and Utilization Project (HCUP). The HCUP is a federal-state-industry partnership that provides all discharge-related data from over 990 hospitals (i.e., about 8 million annual hospital stays) [5]. The NIS is the largest all-payer inpatient care data bank in the United States, and it can be used to derive national estimates of inpatient care. By using the data from this data bank, the AHRQ has been able to provide complication rates and risk-related data, even for quife rare surgical procedures, such as bariatric surgery [6]. 

Kourtis AP, Bansil P, Posner SF, Johnson C, Jamieson DJ. Trends in hospitalizations of HIV-infected children and adolescents in the United States analysis of data from the 1994-2003 Nationwide Inpatient Sample. Pediatrics 2007 120 236-243. 

FIGURES.1 Age distribution (%) receiving a primary total hip replacement in 2006. Note that 46% of hip arthroplasty patients in the United States were less than 65 years of age. (Source Nationwide Inpatient Sample). Data analysis courtesy of Edmund Lau, Exponent, Inc. 

Data from the Nationwide Inpatient Sample indicates that 525,000 primary knee procedures were performed in the United States in 2006, and the demand for knee arthroplasty is projected to exceed 4 million primary procedures by 2030 [1]. As already discussed in Chapter 5, the incidence of knee arthroplasty is greater than hip arthroplasty (see Figure 5.2). In the United States, over 60% of primary knee procedures are performed on women [2]. 

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