BackgroundThe role played by total cholesterol (TC) in risk for subarachnoid hemorrhage (SAH) is unclear because studies report both high and low TC each as a risk factor. We...

Associations between TC levels and SAH, number of SAHs in the subgroup analyses, and type of TC measurement with control group.

Required number of person-years and SAHs for subgroup analysis for different HR values.

Associations between HDL levels and SAHs, number of SAHs in subgroup analyses and type of HDL measurement with control group.