Table 1.
Baseline Characteristics by AD and VaD Among 26 926 896 Participants.
| Variables | Total population | AD | VaD | No Dementia | P Value |
|---|---|---|---|---|---|
| N | 26 926 896 | 997 207 | 597 737 | 25 331 952 | |
| Diabetes, % | 26.0 | 20.6 | 24.3 | 26.2 | <.001 |
| Age, % | 77.7 (7.8) | 83.0 (6.7) | 82.9 (7.3) | 77.4 (7.7) | <.001 |
| Sex, %, | <.001 | ||||
| Male | 42.4 | 34.2 | 38.1 | 42.9 | |
| Female | 57.6 | 65.8 | 61.9 | 57.1 | |
| Primary payer, %, | <.001 | ||||
| Medicare | 89.5 | 92.8 | 92.5 | 89.3 | |
| Medicaid | 1.5 | 1.1 | 1.7 | 1.5 | |
| Private | 7.6 | 4.9 | 4.7 | 7.8 | |
| Othera | 1.4 | 1.2 | 1.1 | 1.4 | |
| Race/ethnicity, %, | <.001 | ||||
| White | 80.9 | 79.4 | 78.9 | 81.0 | |
| African American | 8.9 | 10.5 | 11.4 | 8.7 | |
| Hispanic | 6.1 | 6.4 | 5.3 | 6.1 | |
| a Other | 4.1 | 3.5 | 4.4 | 4.2 | |
| b Median household income, % | .013 | ||||
| US$1–US$24999 | 6.1 | 6.1 | 6.1 | 6.1 | |
| US$25 000–US$34 999 | 27.8 | 28.0 | 28.3 | 27.7 | |
| US$35 000–US$44 999 | 27.6 | 26.6 | 26.4 | 27.6 | |
| US$45 000 or more | 38.5 | 39.3 | 39.2 | 38.5 | |
| Total in-hospital charge, mean (SD) | US$25 632 (39.1) | US$19 834 (25.4) | US$20 928 (28.2) | US$26 036 (39.7) | <.001 |
| Length of stay | 5.7 (6.8) | 6.2 (7.0) | 7.0 (8.5) | 5.7 (6.8) | <.001 |
| Comorbidity index score | 1.8 (1.9) | 1.3 (1.5) | 1.6 (1.5) | 1.8 (1.9) | <.001 |
| Comorbidities, % | |||||
| Hypertension | 48.7 | 46.4 | 47.3 | 48.8 | <.001 |
| Stroke | 2.3 | 3.0 | 23.6 | 1.8 | <.001 |
| Depression | 5.0 | 8.3 | 7.8 | 4.8 | <.001 |
| COPD | 21.2 | 15.5 | 17.6 | 21.6 | <.001 |
| Hospital type, % | <.001 | ||||
| Rural | 17.4 | 20.0 | 19.0 | 17.3 | |
| Urban nonteaching | 44.7 | 46.9 | 46.1 | 44.5 | |
| Urban teaching | 37.9 | 33.1 | 34.8 | 38.2 | |
| Hospital bed size, % | <.001 | ||||
| Large | 13.3 | 14.6 | 15.8 | 13.2 | |
| Medium | 25.5 | 27.3 | 27.2 | 25.4 | |
| Small | 61.2 | 58.1 | 57.0 | 61.4 | |
| Hospital region, % | <.001 | ||||
| Northeast | 21.2 | 21.5 | 26.9 | 21.0 | |
| Midwest | 24.3 | 23.5 | 22.3 | 24.4 | |
| South | 37.8 | 40.7 | 33.1 | 37.8 | |
| West | 16.7 | 14.3 | 17.7 | 16.8 | |
| Discharge disposition, % | <.001 | ||||
| Routine | 52.0 | 24.8 | 22.3 | 53.7 | |
| Short-term hospital | 3.0 | 1.9 | 2.3 | 3.1 | |
| Another type of facility home health | 40.0 | 67.3 | 69.6 | 38.2 | |
| Against medical advice | 0.4 | 0.2 | 0.2 | 0.4 | |
| Died | 4.6 | 5.6 | 5.5 | 4.5 | |
Abbreviations: AD, Alzheimer dementia; VaD, Non-Alzheimer dementia; SD, standard deviation.
a
Other includes Native American, Pacific Islanders, and Asians.
b
Median household income is from 1999 to 2002.