Table III.

Performance and Calibration Measures

	Development Cohort		External Validation Cohort
	Apparent Model	Internal Validation Bootstrapped Model	External Validated	Recalibrated model
		Overall Complication
C-Statistic	0.72	0.72	0.70	0.70
Slope	1.00	0.99	0.91	1.00
Intercept	0.00	−0.02	−0.33	0.00
Brier Score	0.05	0.05	0.04	0.04
HLT	0.21	0.21	0.02	0.24
		Infectious Complication
C-Statistic	0.70	0.67	0.67	0.67
Slope	1.00	0.99	0.95	1.00
Intercept	0.00	−0.04	−0.19	0.00
Brier Score	0.04	0.04	0.03	0.03
HLT	0.25	0.25	0.51	0.60
		Internal Organ Complication
C-Statistic	0.81	0.80	0.74	0.74
Slope	1.00	0.98	0.88	1.00
Intercept	0.00	−0.08	−0.67	0.00
Brier Score	0.006	0.006	0.004	0.003
HLT	0.14	0.14	0.84	0.97
		Hematologic Complication
C-Statistic	0.84	0.84	0.84	0.84
Slope	1.00	0.98	0.96	1.00
Intercept	0.00	−0.06	−0.31	0.00
Brier Score	0.01	0.01	0.009	0.009
HLT	0.44	0.44	0.42	0.86

HLT: Hosmer Lemeshow test statistic; C-Statistic: concordance statistic or area under the curve