Cases;

Controls;

p value

Ruptured aneurysms

Un-ruptured aneurysms

(n = 117)

(n = 304)

Age (years, mean (s.e.m))

60.46 (13.77)

64.34 (11.33)

n.s.

Male (%)

35

34.2

n.s.

Family history of SAH (%)

11.1

13.2

n.s.

Size (mm, mean (s.e.m))

6.4 (3.40)

5.1 (3.20)

<0.01

Current smoking (%)

31.6

13.5

<0.001

Statin use (%)

9.4

26

<0.001