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1 Assistant Attending Physician, The Norwalk Hospital.
Two hundred cases were studied with respect to the antero-posterior and the lateral diameters of the chest. The quotient of these values was expressed mathematically as the chest index. One-half of the individuals were healthy employees on routine visits to an employees' health clinic and the other half had a variety of chest diseases observed in a cardiopulmonary clinic. Even when corrected for age and sex differences, the difference between the chest indices of the two groups was not sufficient to warrant using the index as a reliable diagnostic sign of emphysema.
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