Validation of the JEN frailty index in the National Long-Term Care Survey community population: identifying functionally impaired older adults from claims data

Table 3 JEN Frailty Index Identification of Concurrent ADL Dependencies with Gender and Age Controls, 2004 NLTCS Community Sample (n = 12,752)Footnote
The AUC indicates the discrimination of the prediction model; the Hosmer-Lemeshow χ² is a measure of the fit of data to the model, or calibration (higher p-values of the statistic indicating better calibration); the Brier score and pseudo-R² assess overall performance (Brier scores range from 0 to 1, lower scores indicating better performance).

Multivariable Models Predictors	Log Odds [Wald 95% c.i.]	Area under ROC Curve [95% c.i.]	Hosmer-Lemeshow χ² (p)	Brier Score [pseudo-R²]
≥3 ADL Dependencies (n = 1276)
Age	1.105 [1.097, 1.113]	0.807 [0.795, 0.820]	5.110 [d.f. = 8] (0.746)	0.076 [0.240]
Gender	0.632 [0.550, 0.725]
JFI Score	1.403 [1.359, 1.448]
≥2 ADL Dependencies (n = 1752)
Age	1.110 [1.103, 1.118]	0.812 [0.801, 0.822]	5.997 [d.f. = 8] (0.648)	0.096 [0.274]
Gender	0.633 [0.561, 0.715]
JFI Score	1.423 [1.382, 1.464]