2012 National Healthcare Quality and Disparities Reports
|65 and over||8.0||0.9|
|Median income of patient's ZIP code||First quartile (lowest income)||8.5||2.0|
|Fourth quartile (highest income)||4.5||1.3|
|Location of patient residence||Large central metropolitan||DSU||DSU|
|Large fringe metropolitan||3.0||0.5|
|Region of inpatient treatment||Northeast||1.8||0.5|
a Severity of injuries is defined using the International Classification of Diseases programs for injury categorization (ICDPIC). The ICDPIC translates ICD-9 diagnosis codes into several standard injury categories or scores, including Injury Severity Score (ISS). An ISS of 16 or greater is classified as severe.
b Percentage of visits treated at level III trauma centers. Remaining percentages were treated at level I or level II trauma centers or nontrauma units.
Key: SE: standard error.
Source: Agency for Healthcare Research and Quality (AHRQ), Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample and Nationwide Emergency Department Sample, and AHRQ Quality Indicators, modified version 4.1.