| 2003 | 2001 | ||||
|---|---|---|---|---|---|
| Population group | Rateb | Standard error | Rateb | Standard error | |
| Total | 1.20 | 0.06 | 1.14 | 0.05 | |
| Age | 0-17 | 0.13 | 0.03 | 0.21 | 0.06 |
| 18-44 | 0.97 | 0.07 | 0.90 | 0.07 | |
| 45-64 | 1.81 | 0.13 | 1.53 | 0.12 | |
| 65 and over | 3.12 | 0.23 | 3.24 | 0.23 | |
| Gender | Male | 1.06 | 0.07 | 0.97 | 0.07 |
| Female | 1.35 | 0.08 | 1.33 | 0.08 | |
| Median income of patient's ZIP Code | Less than $25,000 | 1.09 | 0.24 | 1.14 | 0.21 |
| $25,000-$34,999 | 1.34 | 0.13 | 1.23 | 0.11 | |
| $35,000-$44,999 | 1.21 | 0.09 | 1.08 | 0.10 | |
| $45,000 or more | 1.17 | 0.08 | 1.15 | 0.09 | |
| Location of patient residence | Metropolitan-large | 1.24 | 0.09 | 1.11 | 0.08 |
| Metropolitan-small | 1.07 | 0.11 | 1.24 | 0.13 | |
| Micropolitan | 1.30 | 0.17 | 1.25 | 0.16 | |
| Noncore | 1.31 | 0.20 | 0.87 | 0.17 | |
| Region of inpatient treatment | Northeast | 1.17 | 0.13 | 1.04 | 0.12 |
| Midwest | 1.32 | 0.14 | 1.12 | 0.10 | |
| South | 1.17 | 0.09 | 1.09 | 0.08 | |
| West | 1.14 | 0.12 | 1.36 | 0.14 | |
a Includes admissions specifically for treatment of foreign body left, such as cases from earlier admissions or from other hospitals.
b Estimates are adjusted by age and gender using the total U.S. population for 2000 as the standard population. When reporting is by age, the adjustment is by gender only; when reporting is by gender, the adjustment is by age only.
Source: Agency for Healthcare Research and Quality, Center for Delivery, Organization, and Markets, Healthcare Cost and Utilization Project, Nationwide Inpatient Sample.