Table 7.

Negative (NPP) and positive predictive power (PPP) at the base-rate of .577 which corresponds to the 57.7% instructed simulators in the present experiment

Variable	Cut-off	Specificity	Sensitivity	NPP	PPP
Trial 1	< 4	94	2.2	.4	.33
	< 5	88	14.5	.33	.62
	< 6	75	34.5	.23	.65
Trial 5	< 6	100	10	.41	1
	< 8	94	17.7	.36	.8
	< 10	83	38.9	.26	.75
Trial 1-5	< 21	100	1.1	.43	1
	< 31	95	16.7	.37	.82
	< 39	85	36.6	.27	.76
	< 43	75	41.1	.22	.69
Interference list	< 4	95	10	.38	.73
	< 5	88	33.4	.29	.79
Trial 6	< 5	95	20	.36	.84
	< 7	86	36.7	.27	.78
Trial 7	< 2	95	3.7	.4	.5
	< 7	86	43.3	.26	.8
Trial 6-5	< 1	95	15.5	.37	.81
	< 2	88	41.1	.27	.82
Trial 7-5	< 0	95	8.9	.39	.70
	< 2	81	25.6	.27	.64
Recognition	< 4	100	2.6	.43	1
	< 8	95	13.4	.37	.78
	< 12	86	42.2	.26	.8
Corrected recognition score	< 2	100	18.9	.39	1
	< 6	95	28.9	.34	.89
	< 11	41	61.1	.07	.58
3recallednotrecog	> 4	100	3.3	.43	1
	> 1	86	50	.25	.83
VLMT number of times the first word was recalled in trials 1 to 5	< 2	100	5.5	.42	1
	< 4	82	22.2	.29	.62
	< 5	64	48.9	.16	.64
VLMT number of times the last word was recalled in trials 1 to 5	< 2	97	5.6	.41	.71
	< 3	90	8.9	.36	.54
	< 4	80	22.2	.28	.6
FIT recall	< 1	100	1.2	.43	1
	< 4	91	13.3	.35	.66
	< 9	85	30	.28	.73
FIT recognition	< 6	100	3.4	.43	1
	< 10	94	15.6	.36	.78
	< 12	88	33.3	.29	.79
FIT combination score	< 3	100	2.3	.43	1
	< 15	94	13.4	.37	.75
	< 18	85	25.7	.29	.70
	< 22	79	37.8	.24	.71
BSV-STM correct responses	< 84	100	22.2	.38	1
	< 95	95	55.6	.27	.94
	< 98	64	81.1	.11	.75
BSV-STM RT	> 627	88	83.4	.18	.9
	> 633	83	81.2	.17	.86
	> 717	82	71.1	.19	.84
	> 774	75	65.6	.17	.78
VLMT 1	< 43	95	26.8	.34	.88
	< 57	88	43.6	.27	.83
COMB 1	< 43	100	10	.41	1
	< 53	95	34.6	.32	.9
	< 58	88	44.7	.27	.83

Note: Sensitivity and specificity are computed from the combined values of the patients and best effort groups (specificity) and the combined values of all simulator groups (sensitivity).