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February 20, 1904

Susceptibility to Disease.

JAMA. 1904;XLII(8):545-546. doi:10.1001/jama.1904.02490530047013

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Goddard, Kans., Jan. 14, 1904.

To the Editor:  —I desire to call the attention of the profession to an important factor in the estimation of susceptibility to disease as influenced by age, namely, the decrease in the number of persons living as age increases. I have not been able to learn by a search of such literature as is available to me, and by a correspondence with several men of wide knowledge that this fact has ever been considered in the construction of tables intended to illustrate the varying susceptibility to a given disease at different ages.The tables or reports, as constructed, doubtless illustrate truly the prevalence of the disease at different ages, but fail signally in showing the varying susceptibility. Thus, a compilation before me shows that out of 434 cases of pneumonia, 42 occurred between the ages of 10 and 20, and 24 occurred in persons from

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