. 2021 May 7;28(1):e100235. doi: 10.1136/bmjhci-2020-100235

Table 3.

Daily AUC, accuracy (acc), sensitivity (sens), specificity (spec), NPV and PPV comparison of GB admission, last-value and time-vary models on patient’s daily prediction (a) AUC, accuracy, sens, spec, NPV and PPV of daily prediction test set

Day	N	Admission						Last-value						Time-vary
Day	N	AUC	Acc	Sens	Spec	PPV	NPV	AUC	Acc	Sens	Spec	PPV	NPV	AUC	Acc	Sens	Spec	PPV	NPV
Days After Admission 1	864	0.84	0.82	0.53	0.91	0.64	0.86	0.82	0.79	0.40	0.92	0.61	0.83	0.83	0.77	0.58	0.82	0.51	0.86
Days After Admission 2	859	0.84	0.79	0.60	0.86	0.57	0.87	0.86	0.82	0.49	0.93	0.70	0.85	0.87	0.80	0.60	0.86	0.59	0.87
Days After Admission 3	822	0.86	0.79	0.69	0.83	0.57	0.89	0.85	0.81	0.46	0.93	0.68	0.84	0.89	0.83	0.64	0.90	0.67	0.88
Days After Admission 4	759	0.87	0.78	0.77	0.79	0.56	0.91	0.91	0.84	0.57	0.94	0.76	0.86	0.89	0.84	0.73	0.88	0.69	0.90
Days After Admission 5	680	0.86	0.75	0.77	0.74	0.53	0.89	0.91	0.83	0.57	0.93	0.77	0.85	0.91	0.84	0.76	0.87	0.69	0.90
Days After Admission 6	603	0.87	0.75	0.80	0.73	0.55	0.90	0.94	0.83	0.59	0.92	0.77	0.85	0.91	0.83	0.73	0.87	0.70	0.89
Days After Admission 7	539	0.88	0.74	0.83	0.70	0.56	0.90	0.94	0.82	0.62	0.91	0.76	0.84	0.94	0.86	0.81	0.89	0.77	0.91
Days Before Discharge 1	864	0.87	0.77	0.83	0.76	0.52	0.93	0.95	0.94	0.85	0.96	0.88	0.95	0.93	0.95	0.93	0.95	0.86	0.98
Days Before Discharge 2	859	0.92	0.81	0.93	0.78	0.57	0.97	0.98	0.94	0.81	0.98	0.91	0.94	0.98	0.93	0.90	0.94	0.84	0.97
Days Before Discharge 3	822	0.92	0.82	0.91	0.79	0.58	0.96	0.97	0.91	0.74	0.97	0.88	0.92	0.96	0.92	0.87	0.93	0.81	0.96
Days Before Discharge 4	759	0.94	0.80	0.90	0.77	0.58	0.96	0.97	0.89	0.71	0.96	0.86	0.90	0.97	0.88	0.86	0.89	0.74	0.95
Days Before Discharge 5	680	0.93	0.77	0.86	0.73	0.55	0.93	0.96	0.88	0.72	0.94	0.82	0.89	0.96	0.86	0.83	0.87	0.71	0.93
Days Before Discharge 6	603	0.92	0.77	0.85	0.73	0.57	0.92	0.93	0.84	0.67	0.92	0.77	0.87	0.93	0.85	0.78	0.88	0.73	0.91
Days Before Discharge 7	539	0.90	0.76	0.82	0.73	0.58	0.90	0.91	0.82	0.64	0.91	0.76	0.84	0.91	0.81	0.75	0.83	0.68	0.88

AUC, area under the receiver operating characteristic curve; GB, gradient boosting decision trees; NPV, negative predictive value; PPV, positive predictive value.