Table 2

Maximum likelihood with obliquely rotated factor structure (n=210)

	Executive / cognition	Positive symptoms	Negative symptoms	Mood / affect	Oral / motor	Communalities
Coefficient α	0.88	0.75	0.62	0.72	0.75
% Variance	57.2	14.1	9.6	6.6	5.5
NRS-R items
Difficulty in planning	91	5	−9	4	−8	0.750
Difficulty in mental flexibility	72	3	2	1	−2	0.530
Memory difficulties	69	8	−13	14	7	0.601
Disorientation	63	20	5	−15	4	0.532
Decreased initiative or motivation	61	−10	34	12	−11	0.633
Self appraisal difficulties	61	−1	10	−4	16	0.499
Conceptual disorganisation	55	14	5	6	−5	0.405
Difficulties in oral comprehension	40	23	2	−6	20	0.379
Unusual thought content	2	68	17	−22	10	0.508
Hyperactivity/agitation	−5	63	−1	6	1	0.399
Disinhibition	9	61	−1	3	0	0.424
Excitement	20	47	−18	0	−10	0.274
Lability of mood	−4	46	−17	46	13	0.503
Suspiciousness	−2	40	25	12	−7	0.310
Emotional withdrawal	1	−11	61	5	4	0.405
Hostility	−16	40	59	0	−5	0.517
Blunted affect	27	−13	55	−20	7	0.433
Exaggerated somatic concern	−8	3	42	29	−10	0.271
Depressive mood	3	−7	−3	74	5	0.550
Anxiety	−4	8	7	62	−7	0.401
Irritability	0	21	31	42	−6	0.455
Mental fatigability	8	−11	19	39	39	0.539
Difficulties in articulation	1	5	−7	−5	87	0.712
Motor slowing	34	−14	−1	3	48	0.513
Difficulties in oral expression	15	5	2	1	47	0.334
Reduced alertness	14	−20	30	24	22	0.394
Attention	21	30	18	19	17	0.493
Hallucinations	9	21	−10	6	−8	0.065
Guilt	−20	4	8	9	−6	0.040

Factor loadings have been rounded and converted to integers. Loadings ⩾38 are significant.