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Table 2: Comorbidities of participants^{^a}
Study Group NPH HC-M HC-Y
Arterial hypertension 5/10 6/18 0/14
Arteriovenous malformation 0/10 0/18 2/14
Atrial fibrillation 0/10 2/18 0/14
Headaches 0/10 1/18 1/14
Coronary heart disease 2/10 0/18 0/14
Dizziness 1/10 0/18 0/14
Meningioma^{^b} 0/10 1/18 0/14
Microangiopathy 1/10 1/18 0/14
Multiple sclerosis 0/10 0/18 4/14
Orthostatic tremor 1/10 0/18 0/14
Peripheral arterial disease 1/10 0/18 0/14
Restless leg syndrome 0/10 1/18 0/14
Seizure disorder 1/10 0/18 1/14
Prior stroke 1/10 3/18 0/14
History of syncope 0/10 1/18 0/14
History of transient ischemic attack 0/10 2/18 0/14
↵a Data are number of patients per study group.
↵b The meningioma measured 1.2 cm at the maximum.

Study Group	NPH	HC-M	HC-Y
Arterial hypertension	5/10	6/18	0/14
Arteriovenous malformation	0/10	0/18	2/14
Atrial fibrillation	0/10	2/18	0/14
Headaches	0/10	1/18	1/14
Coronary heart disease	2/10	0/18	0/14
Dizziness	1/10	0/18	0/14
Meningioma^{^b}	0/10	1/18	0/14
Microangiopathy	1/10	1/18	0/14
Multiple sclerosis	0/10	0/18	4/14
Orthostatic tremor	1/10	0/18	0/14
Peripheral arterial disease	1/10	0/18	0/14
Restless leg syndrome	0/10	1/18	0/14
Seizure disorder	1/10	0/18	1/14
Prior stroke	1/10	3/18	0/14
History of syncope	0/10	1/18	0/14
History of transient ischemic attack	0/10	2/18	0/14