Table 1.
Characteristics of index hospitalizations for acute exacerbation of chronic obstructive pulmonary disease, 2010-2012
| Variables | Overall (n=76,697) |
|---|---|
| Age (year), median (IQR) | 76 (71-83) |
| Age category | |
| 65-84 years | 62,257 (81) |
| ≥85 years | 14,440 (19) |
| Sex | |
| Male | 30,987 (40) |
| Female | 45,710 (60) |
| Race/ethnicity | |
| Non-Hispanic white | 65,257 (85) |
| Non-Hispanic black | 6,536 (9) |
| Hispanics | 3,303 (4) |
| Other/unknown | 1,601 (2) |
| Median household income | |
| 1st quartile (lowest) | 17,299 (23) |
| 2nd quartile | 17,860 (24) |
| 3rd quartile | 18,380 (25) |
| 4th quartile (highest) | 21,485 (29) |
| Number of comorbidities* | |
| 0-1 | 3,754 (5) |
| 2-4 | 17,325 (23) |
| ≥5 | 55,618 (73) |
| Discharge year | |
| 2010 | 27,037 (35) |
| 2011 | 27,046 (35) |
| 2012 | 22,614 (29) |
| Geographic region | |
| Northeast | 13,908 (18) |
| Midwest | 19,586 (26) |
| South | 34,056 (44) |
| West | 9,007 (12) |
| Guam, Puerto Rico and Virgin Islands | 140 (0.18) |
Data were shown as n (%) unless otherwise specified.
Abbreviation: IQR, interquartile range
*
Comorbidities were based on 27 chronic conditions (excluding chronic obstructive pulmonary disease) defined by the Centers for Medicare & Medicaid Services.