Risk assessment for cerebral microbleeds and intraventricular hemorrhage in patients with moyamoya disease by multivariate analysis.

description for the procedure of selecting independent variables for Cox’s proportional hazards model, and their conclusion of CMB in DPWM as the predictor of subsequent IVH should be verified according to the following recommendation. They conducted a follow-up study over a median period of 23 months, but continuous follow-up is ineffective as the number of total patients at baseline were also limited in their study. To keep a high enough number of events, more extensive baseline data should be set for a stable estimate in the risk assessment of IVH. As they planned an important clinical study on the risk assessment of IVH in patients with moyamoya disease, definite contributing factors should be determined.