Object versus spatial visual mental imagery in patients with schizophrenia

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Table 1

Demographic characteristics of the patients and controls

Characteristic	Group; mean (and standard deviation)^*

	Patients with schizophrenia (n = 44)	Control subjects (n = 20)
Age, yr	29.7 (7.2)	32.5 (6.1)
Education, yr	14.7 (3.0)	15.3 (1.9)
Male:female ratio	37:7	17:3
PANSS
Positive scale	13.7 (5.1)	NA
Negative scale	15.2 (5.7)	NA
General psychopathology scale	30.8 (8.2)	NA
No. of admissions to hospital	1.9 (1.8)	NA
Duration of illness, mo	49.6 (52.8)	NA