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Risk of bias
| First author | Sudden-death aSAH | Sufficient sample size | Classification of dyslipidemia | Confirmation of aneurysmal presence | History of aSAH—exclusion | Risk of bias |
|---|---|---|---|---|---|---|
| Yoshimura [44] | − | + | + | + | + | High |
| Vlak [42] | − | + | − | + | + | High |
| Matsukawa [28] | − | − | − | + | + | High |
| Inagawa [22] | NA | + | − | + | + | High |
| Hostettler [19] | − | + | + | + | + | High |
+ low risk of bias;− high risk of bias; NA (not applicable), unclear risk of bias; aSAH, aneurysmal subarachnoid hemorrhage
