TY - JOUR
T1 - Incidence and prevalence of intracranial vascular malformations in Olmsted County, Minnesota, 1965 to 1992
AU - Brown, Robert D.
AU - Wiebers, David O.
AU - Torner, James C.
AU - O'Fallon, W. Michael
PY - 1996/4
Y1 - 1996/4
N2 - We used the Mayo Clinic medical records linkage system to detect all cases of intracranial vascular malformation (IVM) among residents of Olmsted County, Minnesota from 1965 to 1992 and found 48 IVMs over the 27-year period, including four patients with IVM detected at autopsy, without prior symptoms. Twenty-nine of 48 patients were symptomatic at presentation. From 1985 to 1992, the age- and sex-adjusted detection rate for IVMs excluding asymptomatic autopsy cases was 2.75 in 100,000 person-years (P-Y) (95% CI, 1.6 to 3.9). From 1965 to 1992, the detection rate was 1.84 in 100,000 P-Y (95% CI, 1.3 to 2.4). On January 1, 1990, the age- and sex-adjusted prevalence rate of identified IVMs was 19.0 in 100,000 P-Y (95% CI, 10.5 to 27.5). Detection rates increased from 1965 to 1992, probably due to increased identification of cases because of advances in imaging technology. This study provides unique data on incidence rates of detection and prevalence of IVMs on a population basis.
AB - We used the Mayo Clinic medical records linkage system to detect all cases of intracranial vascular malformation (IVM) among residents of Olmsted County, Minnesota from 1965 to 1992 and found 48 IVMs over the 27-year period, including four patients with IVM detected at autopsy, without prior symptoms. Twenty-nine of 48 patients were symptomatic at presentation. From 1985 to 1992, the age- and sex-adjusted detection rate for IVMs excluding asymptomatic autopsy cases was 2.75 in 100,000 person-years (P-Y) (95% CI, 1.6 to 3.9). From 1965 to 1992, the detection rate was 1.84 in 100,000 P-Y (95% CI, 1.3 to 2.4). On January 1, 1990, the age- and sex-adjusted prevalence rate of identified IVMs was 19.0 in 100,000 P-Y (95% CI, 10.5 to 27.5). Detection rates increased from 1965 to 1992, probably due to increased identification of cases because of advances in imaging technology. This study provides unique data on incidence rates of detection and prevalence of IVMs on a population basis.
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U2 - 10.1212/WNL.46.4.949
DO - 10.1212/WNL.46.4.949
M3 - Article
C2 - 8780070
AN - SCOPUS:0029914992
SN - 0028-3878
VL - 46
SP - 949
EP - 952
JO - Neurology
JF - Neurology
IS - 4
ER -