Cerebral microbleeds in idiopathic normal pressure hydrocephalus

Table 1 Baseline comparison between patients with idiopathic normal pressure hydrocephalus and healthy controls

	INPH (n = 14)	Healthy controls (n = 41)	P value
Age mean (SD)	76.4 (5.1)	70.5 (5.4)	0.001*
Women n (%)	6 (43)	18 (44)	1.0^a
Previous MI n (%)	0 (0)	0 (0)	NA
Previous stroke n (%)	0 (0)	0 (0)	NA
Current smoking n (%)	0 (0)	2 (5)	1.0^a
Hypertension^b n (%)	12 (86)	28 (68)	0.30^a
Treated hyperlipidemia n (%)	0 (0)	6 (15)	0.18^a
0–2 risk factors^c	14 (100)	41 (100)	NA
3 risk factors^c	0 (0)	0 (0)	NA
Anti-platelet or anti-coagulant medication	4 (29)	0 (0)	0.003^a
MMT mean (range)	26.6 (22–30)	29.3 (28–30)	0.002*

INPH idiopathic normal pressure hydrocephalus, MI myocardial infarction, MMT mini mental test, SD standard deviation
* 2-sided t-test
^a2-sided χ²-test
^bDefined as either blood pressure > 140/90 or current use of blood pressure lowering medication
^cRefers to current smoking, hypertension and treated hyperlipidemia

ISSN: 2045-8118