The individual recognition performances in quiet are plotted in Figure 5 as a function of the HFPTA of the test ear for the nonveterans (Figure 5(a)) and veterans (Figure 5(b)).
The individual recognition performances in the competing message are plotted in Figure 7 as a function of the HFPTA of the test ear for the nonveterans (Figure 7(a)) and veterans (Figure 7(b)).
Abbreviations: ANOVA = analysis of variance, EHLS = Epidemiology of Hearing Loss Study, HFPTA = high-frequency pure tone average, HHIE-S = Hearing Handicap Inventory for the Elderly-Screening (version), HL = hearing level, LE = left ear, NU-6 = Northwestern University Auditory Test No.
5, 1, 2) HFPTA (1, 2, 4) Statistic (dB HL) (dB HL) NV V NV V 48-59 Years Mean 10.
Because the HFPTA was a more appropriate pure tone metric than the traditional PTA, we calculated DSI using the HFPTA as the hearing impairment component in the DSI definition.
4 percent, depending on whether the traditional PTA or the HFPTA was used to define hearing impairment.
The HFPTA is a better pure tone metric than the traditional PTA in that it places more emphasis on the higher frequencies, which are important for communication, especially in background noise [21-23,38,40-44].