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The dependability of the Kahn test and the prevalence of syphilis were determined in an unselected group of 860 male college students. The physical examinations were made and the medical histories obtained independently of the laboratory findings. It was found that there was a high degree of correlation between the Kahn reactions and the clinical findings. The prevalence of syphilis was less than 0.5 per cent. The students examined were white males ranging in age between 17 and 28, although the majority were between 18 and 23 years. With one or two exceptions all were of American parentage.
The accompanying table shows that of 860 students examined 855, or 99.42 per cent, gave negative reactions, and 5, or 0.58 per cent, gave positive reactions to the Kahn test. The clinical findings and medical histories secured of the 855 students giving negative reactions to the Kahn test were in agreement with
NAGLE N, WILLETT JC. KAHN REACTION IN A GROUP OF COLLEGE STUDENTS. Arch Derm Syphilol. 1934;30(1):21. doi:10.1001/archderm.1934.01460130029005
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