Table 1.

Summary of participant neuropsychological performance

	Patients with schizophrenia		Healthy controls
	Mean	s.d.	Mean	s.d.	P	Cohen's d
Demographics
Gender, females/males	4/29		4/29
Age, years	36.00	13.57	34.55	12.64	0.654	0.11
Education levela	12.52	1.48	13.45	2.08	0.039	0.52
WTAR	101.66	14.59	109.06	9.24	0.018	0.62
Clinical measures
Age at onset, years	21.91	7.64
Illness duration, years	13.34	10.38
PANSS positive	15.75	3.23
PANSS negative	15.72	4.49
PANSS total	59.50	9.77
UPSA total	100.40	12.12
MATRICS total	34.39	11.82
Clinical Global Impression	3.73	0.72
Calgary Depression Scale	0.61	0.70
FTND	0.76	1.09
Olanzapine equivalent	12.67	7.46
SAS	1.15	1.37
AIMS	1.58	2.43
BAS	0.24	0.50

^a.Education level was determined based on number of years in school.

WTAR, Wechsler Test of Adult Reading; PANSS, Positive and Negative Syndrome Scale; UPSA, UCSD Performance Based Skills Assessment; MATRICS, Measurement and Treatment Research to Improve Cognition in Schizophrenia; FTND, Fagerstrom Test for Nicotine Dependence; SAS, Simpson Angus Scale; AIMS, Abnormal Involuntary Movements Scale; BAS, Barnes Akathisia Scale.