Table 3.

Clinical characteristics for PNS and non-PNS patients.

Clinical characteristics	PNS (n = 16)	non-PNS (n = 48)	Statistic	p
NEGATIVE SYMPTOMS TOTAL (SANS)
First assessment	31.2 ± 13.6	27.2 ± 12.4	t = −1.09	0.280
6-Month	30.1 ± 11.3	17.3 ± 12.0	t = −3.75	<0.001
12-Montha	30.1 ± 15.4	14.8 ± 10.0	t = −4.14	<0.001
POSITIVE SYMPTOM TOTAL (SAPS)
First assessmenta	34.5 ± 10.7	34.6 ± 17.7	t = −0.39	0.701
6-Montha	10.9 ± 9.2	9.5 ± 11.7	t = −1.39	0.173
12-Montha	16.4 ± 13.9	8.6 ± 11.7	t = −2.73	0.011
DEPRESSIVE SYMPTOM TOTAL (CDSS)
First assessmenta	3.7 ± 4.4	4.8 ± 5.2	t = 0.46	0.645
6-Montha	2.9 ± 3.5	1.7 ± 3.2	t = −1.62	0.111
12-Montha	1.6 ± 2.3	1.8 ± 3.2	t = 0.16	0.873
ANTIPSYCHOTIC DOSAGE (mg/DAY)b
First assessmenta	151.5 ± 116.1	173.0 ± 158.8	t = 0.12	0.908
6-Montha	174.8 ± 155.3	189.3 ± 151.2	t = 0.33	0.746
12-Montha	107.8 ± 61.4	203.5 ± 248.4	t = 1.36	0.178
MEDICATION ADHERENCEc
First assessment	3.3 ± 1.5	3.2 ± 1.5	U = 362.0	0.645
6-Month	3.1 ± 1.2	3.0 ± 1.4	U = 379.5	0.939
12-Month	2.3 ± 1.9	3.2 ± 1.5	U = 294.0	0.102
Duration of untreated illness (weeks)	409.6 ± 283.5	281.8 ± 250.7	t = −1.76	0.083
Duration of untreated psychosis (weeks)	37.2 ± 51.6	62.4 ± 84.4	t = 0.75	0.457

PNS, persistent negative symptoms.

^aAnalyzed using transformed data but values are presented in raw form.

^bAntipsychotic total presented in chlorpromazine equivalents.

^cMedication adherence: 0 = never adherent to 4 = fully adherent.