. Author manuscript; available in PMC: 2020 Oct 1.

Published in final edited form as: Am J Psychiatry. 2019 Jul 29;176(10):829–838. doi: 10.1176/appi.ajp.2019.18101212

Table 1.

Subject demographics for three patient groups and controls. Values are mean ± SD. PANSS: The Positive and Negative Syndrome Scale

	Controls		Treatment Initiation Patients		Treatment Responsive Patients		Treatment Resistant Patients		Analysis
	Controls		Treatment Initiation Patients		Treatment Responsive Patients		Treatment Resistant Patients		Four Groups		Treatment Resistant vs. Responsive
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	F	p	t-score	p
Age (years)	39.2	13.4	28.6	10.1	46.3	11.5	47.8	8.9	17.1	10⁻¹⁰	0.6	0.5
PANSS (total)	N/A	N/A	74.7	13.0	49.6	12.2	69.0	19.5	n/a	n/a	11.8	10⁻¹⁹
Illness Duration (years)	N/A	N/A	2.5	1.7	23.4	5.0	22.9	6.3	n/a	n/a	0.4	0.7
Education (years)	13.0	2.9	12.7	3.5	12.3	2.9	12.0	3.0	2.6	0.11	0.5	0.6
Medication Dose (CPZ)	N/A	N/A	176.4	117	404	345	781	354	n/a	n/a	4.1	10⁻⁵
Current Smokers	35%		29%		27%		30%		2.2	0.15	0.7	0.5