Table A.2.

Changes in predictive accuracy for 30-day mortality and non-home discharge with addition of frailty indices as binary variables to base prediction model

	Base	Base + RAI	Base + mFI-5
30-day Mortality
AUC	0.77 (0.76, 0.79)	0.77 (0.76, 0.79)	0.77 (0.76, 0.79)
ICI	0.01 (0.00, 0.02)	0.01 (0.00, 0.02)	0.01 (0.00, 0.02)
Reclassification
Events (%)		−38	−33
Non-events (%)		56	44
NRI		0.18 (−0.14, 0.24)	0.10 (−0.09, 0.17)
TPR (%)	74	74	74
FPR (%)	35	34	34
TNR (%)	65	66	66
FNR (%)	26	26	26
Non-home Discharge
AUC	0.74 (0.71, 0.77)	0.75 (0.72, 0.78)	0.75 (0.72, 0.78)
ICI	0.02 (0.01, 0.04)	0.03 (0.01, 0.04)	0.02 (0.01, 0.04)
Reclassification
Events (%)		−37	−28
Non-events (%)		68	58
NRI		0.30 (0.18, 0.41)	0.29 (0.09, 0.42)
TPR (%)	45	46	46
FPR (%)	12	13	13
TNR (%)	88	87	87
FNR (%)	55	54	54

Abbreviations: RAI = Risk Analysis Index; mFI-5 = 5-factor Modified Frailty Index; AUC = area under the receiver operating curve; ICI = integrated calibration index; NRI = continuous net reclassification index; TPR = true positive rate; FPR = false positive rate; TNR = true negative rate; FNR = false negative rate.