Table 1.

One-sample t-test for the comparison of the scales and indexes of malingering and defensiveness with a test value (cut-off score) and the contrast of the observed probability of malingering or defensiveness classification among CPOs with a constant (0.05).

Scale/index	Cut-off score	t	M	d	f(p)	Z	OR
L	≥66.45	−9.86***	53.55	−1.14	9(0.120)	2.78**	2.40
F	≥66.45	−5.78***	58.95	−0.67	19(0.253)	8.06***	5.06
K	≥66.45	−12.55***	49.44	−1.45	5(0.067)	0.68	1.34
K	≤33.55	11.72***	49.44	1.37	6(0.080)	1.19	1.60
F1	≥66.45	−2.47*	62.93	−0.28	32(0.413)	14.42***	8.26
F2	≥66.45	−10.25***	54.63	−1.18	9(0.120)	2.78**	2.40
F-K+	≥0.90	−10.84***	0.22	−2.64	5(0.067)	0.68	1.34
F-K	≤-0.90	17.77***	0.22	3.45	0(0.000)	–	–

df(74). M, mean of the CPO group; d, Cohen's d; Z, zeta for the difference between the observed proportion and a constant (0.05); OR, odds ratio effect size;

⁺F-K index was transformed to area under the curve (AUC);

^*p < 0.05;

^**p < 0.01;

^***p < 0.001.