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CPT Karl W. Hattler, MS, MSC; CPT Gerald I. Schuchman, MS, MSC

Arch Otolaryngol. 1970;92(4):348-352.

Abstract
The fixed frequency Békésy tracing was found to be an efficient screening device for detecting the presence of nonorganic hearing loss when the off-time of the pulsed signal was lengthened from 200 to 800 msec. The lengthened off-time (LOT) test was given to 340 hearing-impaired patients in a clinic population with a high incidence of nonorganic hearing loss. The LOT test correctly identified 99.6% of the organically-impaired patients and 95.5% of the nonorganic patients for an overall efficiency of 98.3%.

Author Affiliations
Washington, DC

From the Army Audiology and Speech Center, Walter Reed General Hospital, Walter Reed Army Medical Center, Washington, DC.

Footnotes
Accepted for publication June 9, 1970.

Reprint requests to Army Audiology and Speech Center, Walter Reed General Hospital, Walter Reed Army Medical Center, Washington, DC 20012 (CPT Hattler).

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