Table 1 Baseline information of elderly patients with intracranial aneurysms

Age (SD)/years old

74.0 ± 4.7

74.5 ± 4.8

73.3 ± 4.3

0.023

Female patients, (%)

220/290 (75.9)

132/176 (75.0)

88/114 (77.2)

0.670

Smoking, (%)

25/290 (8.6)

15/176 (8.5)

10/114 (8.8)

0.941

Alcohol consumption, (%)

15/290 (5.2)

6/176 (3.4)

9/114 (7.9)

0.158

Hypertension, (%)

228/290 (78.6)

144/176 (81.8)

84/114 (73.7)

0.133

Regular treatment of hypertension, (%)

198/228 (86.8)

119/144 (82.6)

79/84 (94.0)

0.024

Hypoproteinaemia, (%)

171/290 (59.0)

130/176 (73.9)

41/114 (36.0)

< 0.001

Anaemia, (%)

152/290 (52.4)

119/176 (67.6)

33/114 (28.8)

< 0.001

Diabetes mellitus, (%)

156/290 (53.8)

133/176 (75.6)

23/114 (20.2)

< 0.001

Electrolyte disturbance, (%)

143/290 (49.3)

113/176 (64.2)

30/114 (26.3)

< 0.001

Hyperlipidaemia, (%)

36/290 (12.4)

17/176 (9.7)

19/114 (16.7)

0.113

Pulmonary infection, (%)

110/290 (37.9)

80/176 (45.5)

30/114 (26.3)

0.001

Coronary disease, (%)

38/290 (13.1)

31/176 (17.6)

7/114 (6.1)

0.005

Brain atrophy, (%)

32/290 (11.0)

25/176 (14.2)

7/114 (6.1)

0.032

Ischaemic stroke, (%)

98/290 (33.8)

72/176 (40.9)

26/114 (22.8)

0.009

Haemorrhagic stroke, (%)

8/290 (2.8)

6/176 (3.4)

2/114 (1.8)

0.636