Table 2.

SOPS item means and standard deviations in the whole sample and PS, PRS, CC groups

	PS, n=20	PRS, n=59	CC, n=71	p value*	Post hoc**
Positive symptoms, mean ± SD
P1. Unusual Thought Content/Delusional Ideas	5.7±0.9	4.3±1.4	2.5±1.5	<0.001	1>2>3
P2. Suspiciousness/Persecutory Ideas	5.1±1.7	3.4±1.4	1.5±1.3	<0.001	1>2>3
P3. Grandiosity	2.4±2.1	1.3±1.7	0.4±0.7	<0.001	1>2>3
P4. Perceptual Abnormalities/Hallucinations	4.8±1.7	3.9±1.8	1.9±1.5	<0.001	1=2>3
P5. Disorganized Communication	3.1±2.1	1.6±1.6	0.6±0.9	<0.001	1>2>3
Negative symptoms, mean ± SD
N1. Social Anhedonia	4.7±1.8	3.5±2.1	2±1.9	<0.001	1=2>3
N2. Avolition	4.7±1.5	4.1±1.4	2.3±1.5	<0.001	1=2>3
N3. Expression of Emotion	3.9±1.3	2.7±1.6	1.2±1.5	<0.001	1>2>3
N4. Experience of Emotions and Self	3.4±1.8	3±1.7	1.3±1.6	<0.001	1=2>3
N5. Ideational Richness	3.6±1.1	2.3±1.5	1.4±1.5	<0.001	1>2>3
N6. Occupational Functioning	5.2±0.7	3.7±1.4	2.6±1.5	<0.001	1>2>3
Disorganization Symptoms, mean ± SD
D1. Odd Behavior or Appearance	3.7±1.8	1.7±1.5	0.5±0.8	<0.001	1>2>3
D2. Bizarre Thinking	2.8±2	1.8±1.7	0.3±0.8	<0.001	1>2>3
D3. Trouble with Focus and Attention	3.6±1.3	2.7±0.9	2±1.1	<0.001	1>2>3
D4. Personal Hygiene	3±1.7	1.4±1.3	0.4±0.8	<0.001	1>2>3
General Symptoms, mean ± SD
G1. Sleep Disturbance	3.5±1.4	2.9±1.2	1.5±1.3	<0.001	1=2>3
G2. Dysphoric Mood	4.7±1.3	4.5±1.3	2.8±1.9	<0.001	1=2>3
G3. Motor Disturbances	1.9±1.5	1.4±1.2	0.6±1.1	<0.001	1=2>3
G4. Impaired Tolerance to Normal Stress	4.9±1.6	4.2±1.4	2.7±1.7	<0.001	1=2>3

CC, clinical controls; PRS, psychosis risk syndrome; PS, psychotic syndrome; SD, standard deviation; SOPS, the Scale of Prodromal Symptoms..

^*One-Way ANOVA.

^**Bonferroni’s test.