Table 4.

Sensitivity, specificity, positive and negative predictive powers for main IFIPT variables at baseline

	Sensitivity	Specificity	PPP	NPP
IFIPT total learning
≤4	0.44	0.87	0.53	0.82
≤5	0.58	0.71	0.40	0.83
≤6	0.67	0.63	0.38	0.85
≤7	0.67	0.50	0.31	0.82
≤8	0.75	0.36	0.28	0.81
IFIPT delay hits
≤3	0.57	0.70	0.38	0.84
≤4	0.74	0.44	0.30	0.84
≤5	0.86	0.33	0.29	0.88
≤6	0.91	0.18	0.26	0.86

Notes: IFIPT = Indiana faces in places test; PPP = positive predictive power; NPP = negative predictive power.