Comparing frailty measures in their ability to predict adverse outcome among older residents of assisted living

BMC Geriatrics

Table 4 Area under the ROC curve (95% Confidence Intervals) for models of one-year outcomes, comparing frailty measures

Model		Death¹	Hospitalization²	Move to Long-Term care¹
1	Sex and age	0.638 (0.592-0.683)	0.531 (0.495-0.566)	0.552 (0.510-0.593)
2	Sex, age, and co-morbidity	0.652 (0.607-0.698)	0.592 (0.558-0.627)	0.554 (0.512-0.596)
3	Sex, age, co-morbidity, and Armstrong Index	0.683 (0.639-0.728)	0.609 (0.575-0.643)	0.638 (0.598-0.678)
4	Sex, age, co-morbidity, and Full Frailty Index	0.691 (0.648-0.733)	0.610 (0.576-0.644)	0.667 (0.625-0.707)³
5	Sex, age, co-morbidity, and CHS Frailty Criteria ⁴	0.701 (0.655-0.747)	0.629 (0.592-0.665)	0.610 (0.564-0.656)
6	Sex, age, co-morbidity, and CHESS Scale	0.683 (0.640-0.725)	0.610 (0.576-0.645)	0.602 (0.558-0.646)

Note:
1. Models 3–6 differed from models 1 and 2 for outcomes of death and long-term care. All p-value less than 0.03.
2. For hospitalization outcome, models 3, 4, and 6 differed from model 1 (p <; .001 for all), and model 5 differed from both models 1 and 2 (p <; .001, p = .003), respectively).
3. For long-term care, model 4 differed from models 5 (p = .003), 6 (p = .016), and marginally with model 3 (p = .087).
4. All pair-wise comparisons involving model 5 are based on n = 927 residents; otherwise, n = 1066 residents. The relevant AUC (95%CIs) estimates for Models 1 and 2 for n = 927 residents are as follows:
Death: Model 1, 0.649 (0.600-0.698); Model 2, 0.670 (0.622-0.719).
Hospitalization: Model 1, 0.520 (0.481-0.558); Model 2, 0.598 (0.561-0.635).
Long-Term Care: Model 1, 0.552 (0.506-0.598); Model 2, 0.552 (0.506-0.598).

ISSN: 1471-2318