| Characteristics | No AD (N = 19,161) | AD (N = 19,161) | P value |
| Age – yrs. | 83.75 (6.31) | 83.75 (6.31) | 1.000 |
| Gender (%) | |||
| Male | 7,107 (37.09%) | 7,107 (37.09%) | 1.000 |
| Female | 12,054 (62.91%) | 12,054 (62.91%) | |
| Race (%) | |||
| White | 14,600 (76.20%) | 14,600 (76.20%) | 1.000 |
| Black | 2,267 (11.83%) | 2,267 (11.83%) | |
| Hispanics | 1,440 (7.52%) | 1,440 (7.52%) | |
| Asian or Pacific Islander | 329 (1.72%) | 329 (1.72%) | |
| Native Americans | 90 (0.47%) | 90 (0.47%) | |
| Others | 435 (2.27%) | 435 (2.27%) | |
| Hospital Death (%) | |||
| Yes | 1,219 (6.36%) | 1,403 (7.32%) | 0.0002 |
| No | 17,941 (93.64%) | 17,757 (92.68%) | |
| Length of Stay (IQR) | 4 (3, 7) | 5 (3, 8) | <.0001 |
| Total Charge (IQR) | 26,684 (14,627, 50,726) | 26,172 (14,866, 48,001) | 0.014 |
| Median Household Income (%) | |||
| $1 – $38,999 | 5,659 (30.02%) | 6,290 (33.40%) | <.0001 |
| $39,000 – $47,999 | 4,684 (24.85%) | 4,529 (24.05%) | |
| $48,000 – $62,999 | 4,429 (23.49%) | 4,277 (22.71%) | |
| $63,000 or More | 4,079 (21.64%) | 3,738 (19.85%) | |
| Renal Insufficiency (%) | 656 (3.42%) | 690 (3.60%) | 0.345 |
| Diabetes (%) | 4,992 (26.05%) | 4,896 (25.55%) | 0.262 |
| Stroke (%) | 345 (1.80%) | 403 (2.10%) | 0.032 |
| Morbid Obesity (%) | 644 (3.36%) | 340 (1.77%) | <.0001 |
| Obstructive Sleep Apnea (%) | 1,087 (5.67%) | 657 (3.43%) | <.0001 |
| Hospital Characteristics | |||
| Rural | 2,773 (14.47%) | 3,381 (17.65%) | <.0001 |
| Urban Non-Teaching | 8,038 (41.95%) | 8,233 (42.97%) | |
| Urban Teaching | 8,350 (43.58%) | 7,547 (39.39%) | |
| Values are Mean (SD) for Continuous Variables and Count (%) for Categorical Variables. For normally distributed variables p values were computed with t-tests; Wilcoxon Rank-sum Test for non-normally distributed. Chi-square test for Categorical Variables. AD = Alzheimer’s Disease; Participants are matched by Age, Gender and Race. | |||