Neurosurgical procedures in Olmsted County, Minnesota, 1970–1974

Abstract
To help determine neurosurgical needs within communities and within the nation, operations and diagnostic procedures performed by neurosurgeons on residents of Olmsted County, Minnesota, USA, in 1970-1974, were tabulated. This county was studied because its medical records are virtually complete. Annual rates (per 100,000 population) were 42 for lumbar disk removal, 6 for cervical disk removal and 7 for brain-tumor therapy. Other less frequent occasions for neurological surgery are also tabulated.
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