Prediction of Hearing Level using the Stapedial Reflex Thresholds, Especially on Hyde Formulas and Bivariate Plotting Methods

Abstract

Two different procedures, Hyde formulas (a single regression using broad-band noise, BBN for short, and a multiple regression using the BBN and 500Hz) and bivariate plotting (BP) method reported by Silman et al., used in predicting hearing level from the stapedial reflex (SR) threshold data were evaluated for 63 subjects with normal hearing and 66 with hearing-impaired ears.
None of both predictors suggested by Hyde was accrurate for clinical use together with adults and children. With the BP method, no method accurately estimated magnitude of hearing loss while maintaining a high proportion of separation from normal hearing ears with the hearing-impaired on the basis of position on the bivariate graph. Consideration of these findings obtained by the BP method was particularly useful in identifing simulation in adults as well as functional defness in elder children.