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. 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 5b.

Classification Statistics: TOMM Trial 2 Performance for Single and Two-variable Models Predicting Healthy Comparison (HC) and Traumatic Brain Injury (TBI) Group Membership.

SnSp90 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 2 Accuracy .18 0.12 .69 .63 .22 .91 .59 [.49, .70] 5.14*
Effort-Max .08−.12 0.07 .48 .62 .13 .91 .63 [.54, .73] 6.56*
View-Familiar (Max) .08−.12 0.13 .56 .64 .17 .91 .64 [.55, .74] 6.84**
View-Unfamiliar (Max) .08−.12 0.17 .57 .66 .17 .92 .66 [.56, .76] 8.52**
Response-Familiar (Max) .12−.18 0.08 .47 .63 .13 .91 .64 [.54, .74] 7.59**
Response-Unfamiliar (Max) .10 0.22 .48 .71 .14 .94 .64 [.45, .83] 1.68
Effort-Baseline .14 0.19 .54 .67 .16 .92 .70 [.60, .79] 15.18***
View-Familiar (Baseline) .14 0.21 .57 .67 .18 .93 .68 [.58, .77] 10.69**
View-Unfamiliar (Baseline) .14 0.25 .59 .69 .20 .93 .70 [.60, .79] 14.76***
Response-Familiar (Baseline) .14−.24 0.26 .59 .70 .19 .93 .71 [.62, .80] 16.70***
Response-Unfamiliar (Baseline) .10 0.22 .48 .71 .14 .94 .65 [.46, .83] 2.29
Effort-Range .24−.30 0.24 .66 .68 .25 .92 .68 [.58, .77] 11.90**
Familiarity-Difference .16−.18 −0.01 .33 .60 .00 .90 .57 [.46, .67] 1.07
Two-Variable Models: Accuracy +
Effort-Max .16−.18 0.11 .54 .63 .14 .91 .69 [.59, .78] 12.23** .012
View-Familiar (Max) .16−.18 0.20 .58 .67 .20 .92 .69 [.59, .79] 12.43** .011
View-Unfamiliar (Max) .16−.18 0.19 .58 .66 .17 .92 .70 [.61, .79] 14.09** .005
Response-Familiar (Max) .16−.18 0.13 .56 .64 .16 .91 .69 [.59, .78] 12.10** .013
Effort-Baseline .20−.22 0.33 .63 .72 .23 .93 .73 [.64, .82] 20.35*** < .001
View-Familiar (Baseline) .16 0.30 .62 .71 .21 .94 .71 [.62, .81] 15.89*** .002
View-Unfamiliar (Baseline) .18−.20 0.32 .63 .71 .21 .93 .73 [.64, .82] 19.50*** .001
Response-Familiar (Baseline) .20−.22 0.33 .63 .72 .23 .93 .73 [.64, .82] 20.23*** < .001
Effort-Range .30−.32 0.19 .59 .66 .17 .92 .70 [.60, .79] 14.51** .004

Note. SnSp90 = 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