Table 3.

Demographic, Historical, and Clinical Data for Each Neurocognitive Cluster of Schizophrenia.

	Neurocognitive cluster
	Cluster I	Cluster II	Cluster III	Cluster IV
Variable	n = 15	n = 76	n = 41	n = 19
Sex, M/F	9/6	44/32	23/18	12/7
Age	37.00±12.58	31.39±9.69	31.44±10.48	30.86±9.96
Education	11.20±1.21	13.97±2.10	12.56±1.70	12.00±2.16
Parental education	10.50±1.52	13.15±2.93	12.58±2.57	12.17±2.72
Age of onseta	23.75±5.51	24.60±6.74	23.67±6.94	19.50±4.97
Illness duration	8.04±4.33	6.43±5.93	7.94±9.12	10.23±7.88
No. of hospitalizations	4.27±6.40	2.50±5.83	1.65±2.55	3.50±4.82
BPRS total	44.80±10.35	44.00±9.46	42.78±12.15	44.89±12.19
SANS total	52.93±26.85	35.77±20.99	45.29±27.81	46.11±27.46
SAPS total	43.80±24.87	37.67±19.99	32.27±19.43	39.58±28.61
Negative – Affect	2.27±1.10	1.96±1.22	2.34±1.41	2.37±1.61
Negative – Alogia	2.73±1.33	1.21±1.36	2.05±1.45	2.42±1.46
Negative – Anhedonia	3.13±1.46	2.79±1.35	2.66±1.37	2.63±1.57
Negative – Avolition	3.07±1.33	2.03±1.40	2.10±1.56	2.21±1.32
Negative – Attention	2.20±1.57	0.95±1.20	1.83±1.30	1.74±1.63
Positive – Hallucination	2.80±1.66	2.21±1.52	1.88±1.60	2.47±1.74
Positive – Delusionb	3.07±.96	3.19±1.14	2.41±1.20	2.58±1.35
Positive – Bizarre	1.40±1.30	0.89±1.18	1.15±1.28	1.68±1.29
Positive – Thought Dis.	2.27±1.83	1.41±1.32	2.00±1.38	1.68±1.38
Negative composite	2.24±1.13	1.67±.94	2.00±1.22	2.06±1.23
Dis./Thgt composite	1.60±1.16	1.12±.77	1.42±.79	1.43±.99
Par-Host composite	2.70±1.28	2.97±1.18	2.52±1.33	2.22±1.08
Schneiderian composite	1.74±1.10	1.46±1.12	1.05±.91	1.68±1.28

Note. Cluster I: Severe and Profound Global Dysfunction.

Cluster II: Near Normative Performance with Mild Dysfunction in Verbal Memory.

Cluster III: Moderate-severe with more Prominent Executive than Memory Dysfunction.

Cluster IV: Moderate-severe with more Prominent Memory than Executive Dysfunction.

^aII > IV.

^bII > III.