Low Ambient Temperature and Intracerebral Hemorrhage: The INTERACT2 Study.

BACKGROUND:Rates of acute intracerebral hemorrhage (ICH) increase in winter months but the magnitude of risk is unknown. We aimed to quantify the association of ambient temperature with the risk of ICH in the Intensive Blood Pressure Reduction in Acute Cerebral Haemorrhage Trial (INTERACT2) participants on an hourly timescale. METHODS:INTERACT2 was an international, open, blinded endpoint, randomized controlled trial of patients with spontaneous ICH (