Table 1. Comparison of Study Participants With and Without Schizophrenia.

	Healthy Comparison (HC)			Schizophrenia			t	df	p	Cohen's d
	N	Mean	Std Dev	N	Mean	Std Dev
Sociodemographic Factors
Age (years)	120	48.6	11.6	134	48.1	10.1	0.34	237.4	0.731	0.044
Gender (% women)	54%			45%			2.23*	1	0.167	1.49**
Education (years)	120	14.5	2.2	134	12.4	2.0	8.00	243.4	<0.001
Current packs of cigarettes per day	120	0.02	0.08	134	0.38	0.48	-8.5	142.4	<0.001	-1.04
Number of years smoked	120	5.4	10.6	133	16.3	14.7	-6.83	239.2	<0.001	-0.84
Substance Abuse (Yes)	19	15%		55	41%		19.85*	1	<0.001	4.45**
Clinical Factors
Duration of illness (years)				133	25.1	11.2
Antipsychotic dose***				134	1.8	1.5
PHQ-9 Score	116	2.0	2.9	130	7.6	6.6	-8.72	182.0	<0.001	-1.29
Positive symptoms†	119	0.3	0.7	134	6.5	4.3	-16.63	141.4	<0.001	-2.80
Negative symptoms‡	118	1.4	2.3	134	7.4	4.4	-13.93	203.6	<0.001	-1.95
SF-36 Mental Composite score	117	54.6	5.8	132	43.4	11.3	9.97	201.7	<0.001	1.40
Executive function	120	0.4	0.6	134	-0.5	0.7	11.63	249.9	<0.001	1.47
Physical Factors
SF-36 Physical Composite Score	117	51.5	8.8	132	43.2	10.1	6.99	247.0	<0.001	0.89
CIRS Total score	101	3.2	3.2	116	6.8	4.9	-6.45	200.3	<0.001	-0.91
BMI (kg/m2)	117	27.7	7.0	132	32.2	7.4	-4.90	245.7	<0.001	-0.63
hs-CRP (mg/L)	116	2.18	3.5	131	5.08	8.8	-3.47	174.7	0.001	-0.53
Plasma F2-isoprostanes (ng/mL)	120	0.032	0.015	134	0.040	0.021	-3.31	243.4	0.001	-0.43

^*X² value

^**r value

^***Antipsychotic medication daily dosages were converted to WHO average daily doses based on published standards (WHO, 2009, 2010)

^†Scale for the Assessment of Positive Symptoms (SAPS) total score

^††Scale for the Assessment of Negative Symptoms (SANS) total score

PHQ-9 = patient health questionnaire

SF = Short Form Health Survey

CIRS = Cumulative Illness Rating

BMI = body mass index

hs-CRP = high sensitivity C-reactive protein