Skip to main content
. 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 3b.

Classification Statistics: TOMM Trial 2 Performance for Single and Two-variable Models Predicting Simulator (SIM) 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 .65 0.57 .84 .80 .50 .95 .85 [.78, .93] 50.66***
Effort-Max .59−.61 0.41 .62 .77 .22 .96 .78 [.69, .87] 21.22***
View-Familiar (Max) .53 0.37 .60 .76 .21 .96 .78 [.69, .87] 26.14***
View-Unfamiliar (Max) .51−.55 0.38 .61 .77 .21 .96 .80 [.71, .88] 30.20***
Response-Familiar (Max) .57−.59 0.45 .64 .79 .23 .96 .79 [.70, .88] 29.40***
Response-Unfamiliar (Max) .56−.65 0.24 .49 .77 .14 .96 .78 [.67, .90] 15.83***
Effort-Baseline .35 0.39 .61 .76 .21 .96 .75 [.65, .84] 21.49***
View-Familiar (Baseline) .45−.47 0.41 .62 .77 .22 .96 .75 [.66, .85] 20.08***
View-Unfamiliar (Baseline) .43 0.42 .64 .79 .23 .96 .77 [.67, .86] 24.31***
Response-Familiar (Baseline) .35 0.39 .61 .76 .21 .96 .75 [.66, .85] 21.81***
Response-Unfamiliar (Baseline) .40 0.21 .47 .85 .13 .94 .75 [.63, .87] 10.80**
Effort-Range .33−.39 0.29 .58 .71 .20 .93 .65 [.54, .76] 12.62***
Familiarity-Difference .12 0.05 .41 .62 .11 .92 .55 [.43, .66] 0.87
Two-Variable Models: Accuracy +
Effort-Max .69−.75 0.63 .83 .83 .44 .96 .89 [.83, .96] 60.10*** .006
View-Familiar (Max) .67−.73 0.63 .83 .83 .44 .96 .89 [.83, .96] 59.32*** .008
View-Unfamiliar (Max) .71−.75 0.63 .83 .83 .44 .96 .89 [.83, .95] 60.41*** .004
Response-Familiar (Max) .69−.75 0.63 .83 .83 .44 .96 .89 [.83, .96] 60.25*** .006
Response-Unfamiliar (Max) .74−.77 0.59 .70 .88 .26 .98 .90 [.83, .97] 33.97*** .041
Effort-Baseline .75−.77 0.67 .86 .85 .53 .97 .89 [.83, .95] 61.58*** .004
View-Familiar (Baseline) .65−.69 0.57 .80 .80 .39 .96 .90 [.83, .95] 59.18*** .009
View-Unfamiliar (Baseline) .77 0.64 .81 .84 .42 .98 .89 [.83, .96] 61.59*** .003
Response-Familiar (Baseline) .75−.77 0.67 .86 .85 .53 .97 .89 [.83, .95] 61.66** .004
Response-Unfamiliar (Baseline) .70−.81 0.61 .71 .86 .31 .98 .91 [.84, .98] 35.55*** .041
Effort-Range .65−.71 0.57 .84 .80 .50 .95 .85 [.77, .93] 50.79*** .719

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.