title: The reliability of functional gain.
abstract: This study examined the test-retest reliability of unaided and aided sound-field thresholds and the functional gain values derived from these measurements. Sound-field warble-tone thresholds were obtained at 250, 1000, and 4000 Hz from 24 hearing-impaired listeners with and without their hearing aids. Test-retest standard deviations were significantly larger for functional gain than for unaided thresholds, but only slightly and nonsignificantly larger than for aided thresholds. The variability of functional-gain measures is discussed in relation to measures of insertion gain obtained with probe-tube microphones.
authors.affiliation: Indiana University, Bloomington.
authors.forename: L E
authors.initials: LE
authors.lastname: Humes
authors.forename: E U
authors.initials: EU
authors.lastname: Kirn
mesh_terms: D000368:Aged; D001299:Audiometry; D006310:Hearing Aids / Q000592:standards*; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology / Q000628:therapy*; D006801:Humans; D008875:Middle Aged; D015203:Reproducibility of Results