Table 1.

Study group characteristics

	CAA-NH	CAA-ICH	P-value
N	18	11
Age (mean ± sd)	72.9 (12.4)	76.6 (4.7)	0.27 a
Sex (% female)	39	36	1.00 b
CAA grade (mean ± sd) *	3.1 (0.8)	3.5 (0.5)	0.14 b
Demented	Dementia = 12 No dementia = 3 Not reported = 2 Down Syndrome = 1	Dementia = 5 No dementia = 4 Not reported = 2	0.37 c
Location ICH	N.A.	Frontal; n = 2 Fronto-parietal; n = 2 Fronto-temporal; n = 1 Temporal; n = 1 Temporo-parietal; n = 1 Parieto-occipital; n = 3 Not reported = 1	N.A.

Abbreviations: CAA-NH CAA non-haemorrhagic, CAA-ICH CAA-related ICH, N.A. not applicable. * CAA grading according to Olichney et al., [30]. ^aAssessed by t-test; ^bAssessed by Fishers exact test; ^cAssessed by chi-square test. See Additional files 1 and 2 for detailed pathological information reported per case