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

Table 2 Pattern matrix of correlations between the six 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 3, 2, 5, 4 and 6.

Neuropsychological Tests	Factors and cognitive domain labels
	1 (VM)	2 (GVS)	3 (PS)	4 (NVS-M)	5 (SWM)	6 (ES)
AMIPB story immediate recall (IR)	0.55	0.61	-0.26
AMIPB story delayed recall (DR)	0.63	0.53	-0.26
CVLT word list learning trials 1–5	0.82		0.21
CVLT Short delay free recall	0.87		0.17
CVLT Long delay free recall	0.89	-0.10
WAIS-R digit span	-0.19	0.58	0.27	0.18		0.31
WAIS-R vocabulary		0.79	0.18		-0.13	-0.10
WAIS-R block design	-0.16	0.19	0.14	0.54	0.22	-0.15
WAIS-R arithmetic	-0.10	0.67	0.12		0.21	0.17
WAIS-R similarities		0.54	0.31			-0.19
Rey figure copy	-0.17	0.19		0.68
Rey figure immediate recall (IR)	0.18		-0.13	0.91
Rey figure delayed recall (DR)	0.20		-0.13	0.92
Phonemic verbal fluency		0.36	0.62		-0.13
Semantic verbal fluency	0.18	0.34	0.49		-0.19	-0.11
RMT words	0.43	0.16	0.24
RMT faces	0.27	-0.20	0.23	0.34	-0.26
Boston naming (no. correct)		0.35	0.27	0.18	-0.20	-0.28
SCOLP	0.12	0.27	0.77	-0.28
SDMT written			0.78		0.19
SDMT oral	0.14	-0.10	0.75		0.19
CANTAB IED adjusted errors score	0.15				-0.19	0.87
CANTAB Spatial span		-0.11	0.13	0.12	0.53
CANTAB SWM strategy score	-0.10			0.23	-0.80	0.13
CANTAB SWM between errors score			-0.13		-0.79	0.14
CANTAB SOC minimum move solutions		0.13	-0.20	0.16	0.55
CANTAB PAL total trials	-0.39	0.22	-0.13	-0.15	-0.12	0.23
CANTAB RVIP 'A' prime		0.14	0.58		0.24	0.23

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; CANTAB = Cambridge Neuropsychological Test Automated Battery; IED = intradimensional/extradimensional set-shifting task; SWM = Spatial Working Memory task; SOC = Stockings of Cambridge task; PAL = Paired Associate Learning task; RVIP = Rapid Visual Informational Processing task.

ISSN: 1745-6215