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

From: Cerebral microbleeds in idiopathic normal pressure hydrocephalus

  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) 1.0a
Previous MI n (%) 0 (0) 0 (0) NA
Previous stroke n (%) 0 (0) 0 (0) NA
Current smoking n (%) 0 (0) 2 (5) 1.0a
Hypertensionb n (%) 12 (86) 28 (68) 0.30a
Treated hyperlipidemia n (%) 0 (0) 6 (15) 0.18a
0–2 risk factorsc 14 (100) 41 (100) NA
3 risk factorsc 0 (0) 0 (0)
Anti-platelet or anti-coagulant medication 4 (29) 0 (0) 0.003a
MMT mean (range) 26.6 (22–30) 29.3 (28–30) 0.002*
  1. INPH idiopathic normal pressure hydrocephalus, MI myocardial infarction, MMT mini mental test, SD standard deviation
  2. * 2-sided t-test
  3. a2-sided χ2-test
  4. bDefined as either blood pressure > 140/90 or current use of blood pressure lowering medication
  5. cRefers to current smoking, hypertension and treated hyperlipidemia