title: Acceptance of noise growth patterns in hearing aid users.
abstract: OBJECTIVE
  To examine whether the effects of speech presentation level on acceptance of noise could differentiate full-time, part-time, and nonusers of hearing aids and whether these effects could predict hearing aid use.
  
  
  METHODS
  Participants were separated into 3 groups on the basis of hearing aid use: (a) full-time use, (b) part-time use, or (c) nonuse. Acceptable noise levels (ANLs) were measured conventionally and at 8 fixed presentation levels. The effects of presentation level on ANL were determined by calculating global ANL (ANL averaged across presentation level) and ANL growth (slope of the ANL function).
  
  
  RESULTS
  Global ANLs were smaller for full-time users than for part-time users and nonusers; however, global ANLs were not different for part-time users and nonusers. ANL growth differentiated full-time users from nonusers only. Conventional ANL predicted hearing aid use with 68% accuracy. Compared with conventional ANL, the accuracy of the prediction for global ANL and ANL growth decreased, and the accuracy of the prediction at presentation levels of 65 to 75 dB HL was maintained.
  
  
  CONCLUSIONS
  Global ANL differentiated the hearing aid groups in the same manner as conventional ANL. The effects of presentation level on acceptance of noise did not considerably increase the accuracy of the prediction compared with conventional ANL. Clinical applications are discussed.
authors.affiliation: Department of Speech, Louisiana Tech University, P.O. Box 3165, Ruston, LA 71272, USA. melinda@latech.edu
authors.forename: Melinda C
authors.initials: MC
authors.lastname: Freyaldenhoven
authors.forename: Patrick N
authors.initials: PN
authors.lastname: Plyler
authors.forename: James W
authors.initials: JW
authors.lastname: Thelin
authors.forename: Robert A
authors.initials: RA
authors.lastname: Muenchen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006310:Hearing Aids; D034381:Hearing Loss / Q000523:psychology* / Q000628:therapy*; D006320:Hearing Tests; D006801:Humans; D008297:Male; D008875:Middle Aged; D009622:Noise; D010349:Patient Compliance / Q000523:psychology*; D017060:Patient Satisfaction; D011237:Predictive Value of Tests; D013067:Speech Perception