From multidimensional neuropsychological outcomes to a cognitive complication rate: The International Subarachnoid Aneurysm Trial

Table 1 Pattern matrix of correlations between the four principal components and individual neuropsychological tests. (correlations between -0.10 to 0.10 are not shown and correlations > 0.40 and <-0.40 are in bold). The factors explaining the greatest degree of variance was 1, followed by 2, 4 and 3.

Neuropsychological Tests	Factors and cognitive domain labels
	1 (VM)	2 (GVS)	3 (PS)	4 (NVS-M)
AMIPB story immediate recall (IR)	0.56	0.57	-0.29
AMIPB story delayed recall (DR)	0.64	0.49	-0.29
CVLT word list learning trials 1–5	0.81		0.22
CVLT Short delay free recall	0.88	-0.17	0.20
CVLT Long delay free recall	0.90	-0.17	0.12
WAIS-R digit span	-0.27	0.63	0.16	0.22
WAIS-R vocabulary		0.85
WAIS-R block design	-0.16	0.27	0.21	0.65
WAIS-R arithmetic	-0.21	0.69	0.13	0.22
WAIS-R similarities		0.60	0.22
Rey figure copy	-0.10	0.16		0.71
Rey figure immediate recall (IR)	0.23		-0.12	0.85
Rey figure delayed recall (DR)	0.26		-0.12	0.85
Phonemic verbal fluency		0.40	0.56	-0.14
Semantic verbal fluency	0.23	0.33	0.44	-0.18
RMT words	0.49	0.13	0.21
RMT faces	0.34	-0.22	0.13	0.25
Boston naming (no. correct)	0.15	0.38	0.25	0.10
SCOLP	0.17	0.28	0.70	-0.27
SDMT written			0.77	0.22
SDMT oral	0.11		0.75	0.22

VM = verbal memory; GVS = general verbal skills; PS = processing speed; SWM = spatial working memory; NVS-M = non-verbal skills/memory; ES = executive skills. AMIPB = Adult Memory and Information Processing Battery; CVLT = California Verbal Learning Test; WAIS-R = Wechsler Adult Intelligence Scale Revised; RMT = Warrington Recognition Memory Test.

ISSN: 1745-6215