Table 1.
Patient and Hospital Characteristics Among Older Adults With and Without an Acute Geriatric Event in the Weighted Sample
| Characteristic | No Event, % (95% CI) (n = 852,473) | Any Event, % (95% CI) (n = 86,677)* | P |
|---|---|---|---|
| Age, years | |||
| 55-64 | 38.1 (37.4 to 38.8) | 22.1 (21.3 to 23.0) | < .001 |
| 65-74 | 37.0 (36.6 to 37.5) | 32.3 (31.5 to 33.1) | |
| ≥ 75 | 24.8 (24.1 to 25.5) | 45.6 (44.5 to 46.8) | |
| Race/ethnicity | |||
| White | 69.9 (67.3 to 72.4) | 69.0 (66.1 to 71.7) | .113 |
| Black | 8.5 (7.7 to 9.3) | 9.7 (8.8 to 10.8) | |
| Hispanic/Latino | 5.3 (4.5 to 6.2) | 5.0 (4.3 to 5.9) | |
| Asian | 2.1 (1.8 to 2.5) | 2.1 (1.7 to 2.5) | |
| Other/unknown | 14.2 (11.7 to 17.0) | 14.2 (11.4 to 17.5) | |
| Female sex | 49.1 (47.7 to 50.4) | 50.5 (49.4 to 51.7) | .044 |
| Income by zip code, quartile | |||
| Bottom | 22.9 (21.4 to 24.4) | 26.4 (24.9 to 28.1) | < .001 |
| 2nd | 24.9 (23.6 to 26.2) | 25.4 (24.0 to 26.8) | |
| 3rd | 25.6 (24.6 to 26.6) | 25.4 (24.3 to 26.6) | |
| Top | 26.7 (24.3 to 29.1) | 22.7 (20.6 to 25.0) | |
| Charlson comorbidity score | |||
| 0 | 46.1 (45.3 to 46.9) | 24.0 (23.1 to 24.9) | < .001 |
| 1 | 22.2 (21.8 to 22.6) | 19.2 (18.6 to 19.9) | |
| ≥ 2 | 31.7 (30.9 to 32.5) | 56.8 (55.8 to 57.8) | |
| Year | |||
| 2009 | 33.7 (30.1 to 37.4) | 30.9 (27.7 to 34.3) | .013 |
| 2010 | 32.5 (28.9 to 36.4) | 32.7 (29.6 to 35.9) | |
| 2011 | 33.8 (30.0 to 37.8) | 36.4 (32.9 to 40.2) | |
| Elective admission | 86.7 (85.4 to 87.8) | 58.6 (56.8 to 60.3) | < .001 |
| Hospital bed size | |||
| Small | 10.9 (8.8 to 13.5) | 9.4 (8.1 to 11.0) | .107 |
| Medium | 20.9 (18.7 to 23.3) | 22.1 (19.9 to 24.4) | |
| Large | 68.2 (65.1 to 71.1) | 68.5 (65.8 to 71.1) | |
| Hospital region | |||
| Northeast | 21.1 (18.0 to 24.5) | 18.0 (15.5 to 20.7) | .007 |
| Midwest | 23.6 (21.1 to 26.4) | 26.5 (23.5 to 29.6) | |
| South | 35.7 (32.7 to 38.8) | 36.4 (33.7 to 39.3) | |
| West | 19.6 (17.2 to 22.3) | 19.1 (17.0 to 21.4) | |
| Hospital control | |||
| Government | 10.4 (8.1 to 13.2) | 9.8 (7.7 to 12.5) | .121 |
| Private, nonprofit | 79.7 (76.4 to 82.7) | 79.0 (75.9 to 81.8) | |
| Private, invest | 9.9 (8.1 to 12.0) | 11.1 (9.4 to 13.2) | |
| Rural hospital | 7.4 (6.4 to 8.5) | 8.3 (7.2 to 9.5) | .038 |
| Nonteaching hospital | 40.2 (37.2 to 43.3) | 44.6 (41.6 to 47.6) | < .001 |
| Hospital patient volume, quartile | |||
| Bottom | 24.5 (22.7 to 26.5) | 27.4 (25.4 to 29.5) | < .001 |
| 2nd | 25.2 (23.3 to 27.2) | 27.1 (25.0 to 29.4) | |
| 3rd | 25.2 (23.2 to 27.3) | 25.0 (22.8 to 27.3) | |
| Top | 25.1 (21.3 to 29.3) | 20.5 (17.1 to 24.3) |
NOTE. Comparisons were performed by using χ2 testing carried out at the 5% significance level.
*
Geriatric event identified on the basis of International Classification of Diseases, Ninth Revision, Clinical Modification codes that indicate dehydration (276.5x), delirium (290.11, 290.3, 290.41, 291.0, 292.81, 293.0, 293.1, 348.31, 349.82), falls and fractures (800-829, E880-E888), failure to thrive (783.2x, 783.7, 260-263), and pressure ulcers (707.0x, 707.2x, 707.8, 707.9).