Table 3.
Characteristics of “ADL Total Score” and Clinical Cutoff Points of k-Means Clusters (n=69,097)
| Characteristic | Cluster 1 (n =54,252) |
(%) | Cluster 2 (n = 14,845) |
(%) | χ2 | p-value |
|---|---|---|---|---|---|---|
| Gender | ||||||
| Female | 34,484 | (63.6) | 9,562 | (64.4) | 3.64 | .06 |
| Male | 19,768 | (36.4) | 5,283 | (35.6) | ||
| Ethnicity | ||||||
| White | 43,138 | (79.5) | 11,316 | (76.2) | 75.38 | <.001 |
| Other/Multi | 11,114 | (20.5) | 3,529 | (23.8) | ||
| Age Range | ||||||
| 65 – 74 | 15,716 | (29.0) | 3,235 | (21.8) | 574.24 | <.001 |
| 75 – 84 | 20,578 | (37.9) | 5,212 | (35.1) | ||
| >85 | 17,958 | (33.1) | 6,398 | (43.1) | ||
| Group Membership | ||||||
| Alive | 39,712 | (73.2) | 7,905 | (53.3) | ||
| “Not Alive” at 12 Months | 8,603 | (15.9) | 4,609 | (31.0) | 2300.20 | <.001 |
| “Not Alive” at 24 Months | 5,937 | (10.9) | 2,331 | (15.7) | ||
| ADL total score | ||||||
| Mean Cluster Center | 9.35 | (3.81) | 20.87 | (3.24) | ||
| Cutoff value | ≤15 | - | ≥16 | - |
Note. Clusters generated on OASIS attributes “ADL total score” and mortality at 12 and 24 months
There is an inverse relationship between “ADL total score” and functional status (range 0–35).
A lower “ADL total score” indicates functional independence whereas a higher “ADL total score” indicates lower functional status.