OBJECTIVE: To examine the impact of prescription on predicted speech intelligibility and loudness for children. DESIGN: A between-group comparison of speech intelligibility index (SII) and loudness, based on hearing aids fitted according to NAL-NL1, DSL v4.1, or DSL m[i/o] prescriptions. A within-group comparison of gains prescribed by DSL m[i/o] and NAL-NL2 for children in terms of SII and loudness. STUDY SAMPLE: Participants were 200 children, who were randomly assigned to first hearing-aid fitting with either NAL-NL1, DSL v4.1, or DSL m[i/o]. Audiometric data and hearing-aid data at 3 years of age were used. RESULTS: On average, SII calculated on the basis of hearing-aid gains were higher for DSL than for NAL-NL1 at low input level, equivalent at medium input level, and higher for NAL-NL1 than DSL at high input level. Greater loudness was associated with DSL than with NAL-NL1, across a range of input levels. Comparing NAL-NL2 and DSL m[i/o] target gains revealed higher SII for the latter at low input level. SII was higher for NAL-NL2 than for DSL m[i/o] at medium- and high-input levels despite greater loudness for gains prescribed by DSL m[i/o] than by NAL-NL2. CONCLUSION: The choice of prescription has minimal effects on speech intelligibility predictions but marked effects on loudness predictions.
RCT Entities:
OBJECTIVE: To examine the impact of prescription on predicted speech intelligibility and loudness for children. DESIGN: A between-group comparison of speech intelligibility index (SII) and loudness, based on hearing aids fitted according to NAL-NL1, DSLv4.1, or DSL m[i/o] prescriptions. A within-group comparison of gains prescribed by DSL m[i/o] and NAL-NL2 for children in terms of SII and loudness. STUDY SAMPLE: Participants were 200 children, who were randomly assigned to first hearing-aid fitting with either NAL-NL1, DSLv4.1, or DSL m[i/o]. Audiometric data and hearing-aid data at 3 years of age were used. RESULTS: On average, SII calculated on the basis of hearing-aid gains were higher for DSL than for NAL-NL1 at low input level, equivalent at medium input level, and higher for NAL-NL1 than DSL at high input level. Greater loudness was associated with DSL than with NAL-NL1, across a range of input levels. Comparing NAL-NL2 and DSL m[i/o] target gains revealed higher SII for the latter at low input level. SII was higher for NAL-NL2 than for DSL m[i/o] at medium- and high-input levels despite greater loudness for gains prescribed by DSL m[i/o] than by NAL-NL2. CONCLUSION: The choice of prescription has minimal effects on speech intelligibility predictions but marked effects on loudness predictions.
Authors: Teresa Y C Ching; Susan D Scollie; Harvey Dillon; Richard Seewald; Louise Britton; Jane Steinberg; Megan Gilliver; Katrina A King Journal: Int J Audiol Date: 2010-01 Impact factor: 2.117
Authors: Teresa Y C Ching; Susan D Scollie; Harvey Dillon; Richard Seewald; Louise Britton; Jane Steinberg Journal: Int J Audiol Date: 2010-01 Impact factor: 2.117
Authors: Susan D Scollie; Teresa Y C Ching; Richard C Seewald; Harvey Dillon; Louise Britton; Jane Steinberg; Katrina King Journal: Int J Audiol Date: 2010-01 Impact factor: 2.117
Authors: Teresa Y C Ching; Julia Day; Vicky Zhang; Harvey Dillon; Patricia Van Buynder; Mark Seeto; Sanna Hou; Vivienne Marnane; Jessica Thomson; Laura Street; Angela Wong; Lauren Burns; Christopher Flynn Journal: Int J Audiol Date: 2013-12 Impact factor: 2.117
Authors: Teresa Y C Ching; Vicky W Zhang; Earl E Johnson; Patricia Van Buynder; Sanna Hou; Lauren Burns; Laura Button; Christopher Flynn; Karen McGhie Journal: Int J Audiol Date: 2017-10-03 Impact factor: 2.117