title: Primary intracerebral hemorrhage: impact of CT on incidence.
abstract: From 1975-1979, the incidence of primary intracerebral hemorrhage (PIH) increased in Rochester, MN, when compared with a previously decreasing incidence. Judging from patients with PIH who were alert at diagnosis, we estimated that 24% of the hemorrhages in earlier years had been mislabeled as infarction. The 30-day survival rate increased from 8% in 1945-1974 to 44% in 1975-1979. The incidence rate was about 45% higher in patients receiving anticoagulant treatment than in those who did not. The increased incidence rate and improved survivorship were attributed to more frequent identification of small PIH by CT.
mesh_terms: D000328:Adult; D000368:Aged; D000925:Anticoagulants / Q000009:adverse effects; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000209:etiology / Q000401:mortality; D005260:Female; D006801:Humans; D006973:Hypertension / Q000150:complications; D008297:Male; D008875:Middle Aged; D008910:Minnesota; D011859:Radiography
chemical_list: D000925:Anticoagulants