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Table 4 Studies reported the association between the circle of Willis and ischemic stroke, 2020

From: Association between circle of Willis and ischemic stroke: a systematic review and meta-analysis

S.no

Author

Odds ratio

95% CI

P-value

Comments

1

Yu-Ming et al

3.21

1.43–9.62

0.036

PcomA hypoplasia in ischemic stroke patients was 19.35%, which was significantly higher than the control group (8.20%)

2

Shahan et al

7.1

1.28–33.3

0.001

The presence of an additional artery will reduce the risk of stroke

3

Tom-Van et al

1.9

1.3–3.0

0.02

Stenosis of proximal MCA or an incomplete posterior COW was determinants of poor collateral flow in acute stroke patients

4

SMART Group

2.8

1.3–6.3

0.01

An incomplete anterior COW was a predictor of anterior circulation stroke

5

Rafat et al

1.28

1.16–1.49

0.001

The presence of AcomA and PcomA reduced the risk of stroke by 72%

6

Edlira et al

1.5

0.6–3.8

0.4

Anatomical variations of COW in stroke patients were 23.3%, which was higher than the control group (16.7%)