Whether Intracranial Aneurysm Could Be Well Treated by Flow Diversion: A Comprehensive Meta-Analysis of Large-Sample Studies including Anterior and Posterior Circulation

Table 1

Basic characteristics of patients.

	Mean (SD)	of studies	of patients
Age (year)	55.5 (13.4)	23	6695
Female		23	5031 (75.1%)
Clinical presentation		13	1168
Asymptomatic/incidental		12/13	872 (74.7%)
Headache		11/13	517 (44.3%)
Hemorrhagic lesion		11/13	203 (17.3%)
Ischemic lesion		5/13	54 (4.6%)
Visual change		5/13	78 (6.7%)
Other cranial nerve		6/13	166 (14.2%)
Recurring		4/13	150 (12.8%)
Preoperative mRS		10	2698
mRS 0-2		10/10	2591 (96.0%)
mRS 3-5		10/10	107 (4.0%)
Postoperative mRS		13	2449
mRS 0-2		13/13	2283 (93.2%)
mRS 3-5		13/13	166 (6.8%)

Abbreviations: mRS: modified Rankin Scale.