# A national survey of asthma conducted on may 1 2012

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A national survey of asthma conducted on May 1, 2012, obtained the following results for the state of Oklahoma: X = The number of residents with asthma Y = The population of the state on June 30, 2012, and all members of the population were considered at risk Z = The number of new cases of asthma diagnosed during 2012. The incidence rate of asthma during 2012 (per 100,000) would be expressed as:________

A. (X/Y) x 100,000.

B. (Z/X) x 100,000.

C. (Z/Y) x 100,000.

D. (X/Z) x 100,000.

E. None of these is correct.