The HCUP Arizona inpatient files were constructed from the Arizona Hospital Inpatient Database from the Cost Reporting and Review Section of the Arizona Department of Health Services.

Arizona supplied discharge abstract data for inpatient stays in acute care and rehabilitation hospitals with more than 50 beds.

Not all hospitals report a full calendar year of data. Some hospitals close during the year; other hospitals have technical problems that prevent them from reporting a full year.

The source documentation supplied by Arizona does not indicate whether stays in special units within the hospital (e.g., psychiatric, rehabilitation, long-term care) are included.

For the 2001 Arizona SID, an unusually large number of duplicate records were identified in two hospitals. These are records in which all non-synthetic variables are identical. The counts for these two hospitals are:

Duplicates in these hospitals in other years have not been identified.

In the second half of the 2006 Arizona SID, the data source has identified that 895 discharges are missing from one hospital.