Maps of smoothed age-adjusted death rates for Brain & Other Nervous System, Both Sexes are shown and the data behind them are the following.

The following statistics pertain to the 1971 - 1975 map.
Low values range from 1.7 to 4.3
Middle values range from 4.4 to 5.0
High values range from 5.1 to 8.7

In the West Census Region:
Low values are found in approximately 68 % of the Health Service Areas.
Middle values are found in approximately 21 % of the Health Service Areas.
High values are found in approximately 11 % of the Health Service Areas.

In the Midwest Census Region:
Low values are found in approximately 59 % of the Health Service Areas.
Middle values are found in approximately 26 % of the Health Service Areas.
High values are found in approximately 15 % of the Health Service Areas.

In the South Census Region:
Low values are found in approximately 65 % of the Health Service Areas.
Middle values are found in approximately 28 % of the Health Service Areas.
High values are found in approximately 7 % of the Health Service Areas.

In the Northeast Census Region:
Low values are found in approximately 99 % of the Health Service Areas.
Middle values are found in approximately 1 % of the Health Service Areas.
High values are found in approximately 0 % of the Health Service Areas.

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