Geer JH, Falcone GJ, Vanent KN, et al. - Researchers assessed premorbid obstructive sleep apnea (OSA) exposure in patients with nontraumatic intracerebral hemorrhage (ICH) and matched controls to ascertain if it is associated with the risk of ICH. Ethnic/Racial Variations of Intracerebral Hemorrhage is a multicenter, case-control study assessing risk factors for ICH that selected 3,000 cases with ICH and 3,000 controls. The Berlin Questionnaire identified 2,064 cases (71%) and 1,516 controls (52%) as having OSA. When compared with those without OSA, those with OSA were more likely to be male, have hypertension, heart disease, hyperlipidemia, and a higher BMI. When compared with controls, cases had a higher rate of OSA (71% vs 52%). OSA was linked to an increased risk of ICH in a multivariable logistic regression model. Overall, the authors concluded that OSA is a risk factor for ICH.