Evaluation of Factors Affecting Continuous Performance Test Identical Pairs Version Score of Schizophrenic Patients in a Japanese Clinical Sample

Table 2

Measurement results of 4-digit CPT-IP.

P	Patients (𝑛=126)
	Mean	SD^a	ICC^b
d′
1st	1.29	0.84	0.71
2nd	1.55	0.96
mean	1.42	0.84
Hits (0–30)
1st	18.4	7.2	0.77
2nd	19.6	6.9
False alarms (0–30)
1st	6.3	4.6	0.70
2nd	5.7	4.7
Random errors (0–90)
1st	4.8	8.9	0.53
2nd	3.5	4.9

^astandard deviation
^bintraclass correlation coefficient.