Table 3.

Sensitivity, specificity, positive and negative predictive values, and likelihood ratios of individual Alberta Stroke Program Early CT Score region infarction for poor outcome (mRS >2).

Area	Sensitivity	Specificity	PPV	NPV	+LR	−LR
Right
M1	0.27	0.84	0.43	0.72	1.70	0.87
M2	0.64	0.76	0.54	0.83	2.65	0.48
M3	0.91	0.92	0.83	0.96	11.36	0.10
M4	0.18	0.76	0.25	0.68	0.76	1.08
M5	0.73	0.60	0.44	0.83	1.82	0.45
M6	0.91	0.72	0.59	0.95	3.25	0.13
C	0.09	0.92	0.33	0.70	1.14	0.99
Internal capsule (IC)	0.09	0.92	0.33	0.70	1.14	0.99
L	0.18	0.84	0.33	0.70	1.14	0.97
Insula	0.46	0.60	0.33	0.71	1.15	0.90
Left
M1	0.00	0.93	0.00	0.78	0.00	1.08
M2	0.64	0.58	0.28	0.86	1.52	0.63
M3	0.82	0.77	0.47	0.94	3.52	0.24
M4	0.00	0.93	0.00	0.78	0.00	1.08
M5	0.91	0.56	0.34	0.96	2.06	0.16
M6	0.82	0.70	0.41	0.94	2.71	0.26
C	0.00	0.90	0.00	0.78	0.00	1.11
IC	0.00	0.84	0.00	0.76	0.00	1.19
L	0.09	0.80	0.10	0.77	0.45	1.14
Insula	0.46	0.42	0.17	0.75	0.79	1.29

PPV, positive predictive value; NPV, negative predictive value; +LR, positive likelihood ratio; −LR, negative likelihood ratio.