. Author manuscript; available in PMC: 2022 Jul 1.

Published in final edited form as: Neuropsychology. 2021 May 20;35(5):472–485. doi: 10.1037/neu0000747

Table 5a.

Classification Statistics: TOMM Trial 1 Performance for Single and Two-variable Models Predicting Healthy Comparison (HC) and Traumatic Brain Injury (TBI) Group Membership.

	Sn_Sp90	Youden J	PPP BR 40%	NPP BR 40%	PPP BR 10%	NPP BR 10%	AUC	AUC 95% CI	Χ²	Predictor p
One-Variable Models:
Trial 1 Accuracy	.28	0.37	.71	.72	.29	.94	.71	[.61, .80]	18.21^***
Effort-Max	.08−.23	0.26	.59	.70	.19	.93	.67	[.58, .77]	10.57^**
View-Familiar (Max)	.12−.19	0.30	.59	.72	.19	.94	.70	[.60, .79]	13.46^***
View-Unfamiliar (Max)	.15−.17	0.29	.59	.71	.21	.93	.68	[.58, .77]	11.66^**
Response-Familiar (Max)	.23−.26	0.30	.60	.71	.21	.94	.68	[.59, .78]	11.89^**
Response-Unfamiliar (Max)	.18−.20	0.32	.57	.73	.19	.94	.74	[.64, .84]	16.93^***
Effort-Baseline	.15−.17	0.34	.62	.73	.21	.94	.72	[.63, .81]	19.38^***
View-Familiar (Baseline)	.15−.23	0.32	.60	.73	.21	.94	.71	[.62, .81]	17.78^***
View-Unfamiliar (Baseline)	.15−.25	0.31	.60	.72	.21	.93	.71	[.62, .80]	16.58^***
Response-Familiar (Baseline)	.23	0.35	.62	.74	.22	.94	.74	[.65, .82]	21.36^***
Response-Unfamiliar (Baseline)	.18−.24	0.36	.61	.75	.19	.94	.72	[.62, .82]	14.03^***
Effort-Range	.17−.21	0.16	.57	.65	.18	.92	.62	[.52, .72]	5.87*
Familiarity-Difference	.10	−0.01	.38	.60	.08	.90	.57	[.47, .67]	1.96
Two-Variable Models: Accuracy +
Effort-Max	.28−.32	0.41	.67	.75	.25	.95	.77	[.68, .86]	26.56^***	.006
View-Familiar (Max)	.29−.37	0.40	.66	.75	.24	.95	.78	[.69, .86]	28.81^***	.002
View-Unfamiliar (Max)	.25−.38	0.42	.67	.76	.27	.95	.76	[.68, .85]	26.93^***	.005
Response-Familiar (Max)	.30−.32	0.39	.67	.75	.25	.95	.77	[.68, .86]	26.45^***	.006
Response-Unfamiliar (Max)	.27−.29	0.41	.64	.76	.23	.94	.81	[.73, .90]	31.40^***	.001
Effort-Baseline	.36−.40	0.42	.66	.76	.25	.96	.79	[.71, .87]	32.27^***	.001
View-Familiar (Baseline)	.35−.37	0.41	.65	.76	.25	.96	.78	[.70, .87]	31.36^***	.001
View-Unfamiliar (Baseline)	.36	0.40	.65	.75	.25	.95	.78	[.69, .86]	29.92^***	.001
Response-Familiar (Baseline)	.36−.40	0.42	.66	.76	.25	.96	.79	[.71, .87]	32.55^***	< .001
Response-Unfamiliar (Baseline)	.24	0.46	.65	.80	.24	.96	.80	[.71, .88]	28.81^***	.003
Effort-Range	.30	0.34	.68	.72	.24	.94	.73	[.64, .82]	28.81^***	.109

Note. Sn_Sp90 = Sensitivity (detection of simulated TBI) when Sp Specificity (bona fide TBI) is set at cut point ≥ .90 (range presented when cut point is associated with multiple Sn values); PPP = Positive Predictive Power, NPP = Negative Predictive Power (each presented for 40% and 10% base rate); AUC = ROC area under the curve. See Table 1 for pupil variable abbreviation key.