Table 1.
Characteristics of study sample by best-fit class and probabilities of class membership based on excess prevalence of disease.
| Demographic variable | Total sample | Minimal disease a | Cognitive/Affective b | Multiple morbidity c | Osteoporosis d | Vascular e | Cancer f |
|---|---|---|---|---|---|---|---|
| N (%) | 6171 | 2080 (33.7) | 296 (4.8) | 1640 (26.6) | 835 (13.5) | 671 (10.9) | 649 (10.5) |
| Age, mean (sd) | 77.9 (7.6) | 75.2 (6.6) | 86.8 (6.7) | 79.7 (7.2) | 75.7 (7.0) | 76.6 (6.5) | 81.7 (7.8) |
| Number chronic conditions, mean (sd) | 2.5 (1.5) | 1.5 (1.0) | 4.1 (1.4) | 3.4 (1.0) | 1.7 (1.0) | 4.0 (1.3) | 2.1 (1.1) |
| Female, n (%) | 3520 (57.0) | 605 (29) | 217 (73.3) | 1590 (97.0) | 835 (100) | 168 (33.4) | 105 (16.1) |
| Minority, n (%) | 1937 (31.4) | 753 (36.2) | 142 (48.0) | 585 (35.7) | 30 (3.6) | 413 (61.5) | 14 (2.2) |
| At least some college, n (%) | 3171 (51.4) | 1121 (53.9) | 82 (27.7) | 683 (41.6) | 637 (76.3) | 175 (26.1) | 473 (72.9) |
| Chronic condition | Prevalence in total sample | Prevalence of chronic condition by best-fit class | |||||
| Heart disease | 20.4 | 0.0 | 28.1* | 24.6* | 4.4 | 45.3** | 36.7* |
| High BP | 70.8 | 57.7 | 81.2* | 92.3* | 38.5 | 93.3** | 62.0 |
| Arthritis | 61.2 | 36.5 | 75.4* | 88.4** | 59.3 | 68.0* | 47.4 |
| Osteoporosis | 24.1 | 1.6 | 44.2* | 46.9* | 50.1** | 12.4 | 5.7 |
| Diabetes | 28.3 | 22.3 | 26.0 | 35.2* | 1.5 | 62.1** | 15.1 |
| Lung disease | 18.2 | 8.3 | 20.8* | 28.1** | 13.6 | 27.2* | 16.0 |
| Stroke | 5.9 | 3.4 | 15.9* | 5.6 | 1.2 | 19.4** | 4.0 |
| Dementia | 6.1 | 1.3 | 69.1** | 0.0 | 0.0 | 7.4* | 1.0 |
| Cancer | 15.6 | 14.8 | 10.7 | 13.7 | 17.2* | 23.5* | 30.8** |
| Heart attack | 8.2 | 2.2 | 9.8* | 5.6 | 1.0 | 32.8** | 19.7* |
| Depression | 13.4 | 8.5 | 33.9** | 17.0* | 3.6 | 33.6* | 1.3 |
Note. BP = blood pressure.
* excess prevalence of condition compared to overall sample.
** highest prevalence of condition.
Key for group naming.
a no excess prevalence of any disease
b highest prevalence of dementia and depression
c excess prevalence of gradual-onset chronic conditions
d highest prevalence of osteoporosis
e highest prevalence of conditions that damage or result from damage to blood vessels
f highest prevalence of cancer.