It has been a year since the survey of Detroit school-children for organic heart disease was first undertaken. These children, numbering about 148,000, were first examined by their school physicians. Of the 148,000 children examined, 1,373 were found to have some cardiac defect at the first examination. Later the 1,373 children were carefully studied and classified under the classification recommended by the Society for the Prevention and the Relief of Heart Disease:
Class 1. Patients with organic heart disease who are able to carry on their habitual physical activity.
Class 2. Patients with organic heart disease who are able to carry on diminished physical activity.
A. Slightly decreased.
B. Greatly decreased.
Class 3. Patients with organic heart disease who are unable to carry on any physical activity.
Class 4. Patients with possible heart disease.
Class 5. Patients with potential heart disease.
Class 6. Those having no heart disease.
SCHMIDT HB. HEART CLINICS FOR SCHOOLCHILDREN: A PRELIMINARY PAPER. JAMA. 1922;79(12):956–957. doi:10.1001/jama.1922.02640120030010
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