PURPOSE: We developed 1 clinical question for this review, which addressed the comparison of hearing aids using frequency lowering compared to conventional processing amplification for outcomes of audibility, speech recognition, speech and language, and self- or parent-report for children with hearing loss. METHOD: We systematically searched 26 databases for studies addressing a clinical question and meeting all inclusion criteria. We evaluated studies for methodological quality and reported or calculated effect sizes when possible. RESULTS: The literature search resulted in the inclusion of 5 studies. We implemented several different frequency-lowering strategies across studies; 2 studies used nonlinear frequency compression, 2 used frequency transposition, and 1 used frequency compression with dynamic consonant boost. CONCLUSIONS: Whereas methodological limitations of the included studies preclude the formulation of strong conclusions, findings were generally positive across frequency-lowering strategies and outcomes. Additional high-quality research is needed in this area.
PURPOSE: We developed 1 clinical question for this review, which addressed the comparison of hearing aids using frequency lowering compared to conventional processing amplification for outcomes of audibility, speech recognition, speech and language, and self- or parent-report for children with hearing loss. METHOD: We systematically searched 26 databases for studies addressing a clinical question and meeting all inclusion criteria. We evaluated studies for methodological quality and reported or calculated effect sizes when possible. RESULTS: The literature search resulted in the inclusion of 5 studies. We implemented several different frequency-lowering strategies across studies; 2 studies used nonlinear frequency compression, 2 used frequency transposition, and 1 used frequency compression with dynamic consonant boost. CONCLUSIONS: Whereas methodological limitations of the included studies preclude the formulation of strong conclusions, findings were generally positive across frequency-lowering strategies and outcomes. Additional high-quality research is needed in this area.
Authors: Patricia G Stelmachowicz; Andrea L Pittman; Brenda M Hoover; Dawna E Lewis; Mary Pat Moeller Journal: Arch Otolaryngol Head Neck Surg Date: 2004-05
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: Ryan W McCreery; Joshua Alexander; Marc A Brennan; Brenda Hoover; Judy Kopun; Patricia G Stelmachowicz Journal: Ear Hear Date: 2014 Jul-Aug Impact factor: 3.570