Computerized prediction of intensive care unit discharge after cardiac surgery: development and validation of a Gaussian processes model

Table 3 Classification task

	GP (4 h)	EuroSCORE (4 h)	EuroSCORE vs. GP	Nurses (6 h)	Nurses vs. GP	ICU physicians (6 h)	ICU physicians vs. GP
Validation cohort, n = 499
aROC	0.758	0.726	p = 0.286	X	X	X	X
Brier Score	0.179	0.324	p < 0.001	X	X	X	X
Brier Score Scaled	11%	0%	p < 0.001	X	X	X	X
Hosmer Lemeshow p-value	0.382	< 0.001	X	X	X	X	X
Nurses answer ≤ 6 h, n = 396
aROC	0.769	0.726	p = 0.124	0.695	p = 0.018	X	X
Brier Score	0.177	0.326	p < 0.001	0.245	p < 0.001	X	X
Brier Score Scaled	13%	0%	p < 0.001	1.35%	p < 0.001	X	X
Hosmer Lemeshow p-value	0.405	< 0.001	X	< 0.001	X	X	X
Physicians answer ≤ 6 h, n = 159
aROC	0.777	0.726	p = 0.334	X	X	0.758	p = 0.719
Brier Score	0.166	0.328	p < 0.001	X	X	0.216	p = 0.055
Brier Score Scaled	14.2%	0%	p < 0.001	X	X	12.5%	p < 0.001
Hosmer Lemeshow p-value	0.696	< 0.001	X	X	X	< 0.001	X

The interpretation of the different validation measures can be found in the methodology section.

ISSN: 1472-6947