Week 7.2 Flashcards
What are outcome measures?
Outcome measures allow us to define the amount of benefit someone gets from their hearing aid.
What are the two categories of outcome measures?
1) Objective outcome measures
2) Subjective outcome measures
What must be defined for outcome measures?
1) Treatment effectiveness: improve speech understanding?
2) Treatment efficiency: are some settings better than others for speech?
3) Treatment effects: do HA improve overall life quality
What examples of objective outcome measures were discussed in class?
1) Quick Speech in Noise Test
2) Hearing In Noise Test
3) Lexical Neighbourhood Test
4) Words in Noise Test
Talk to me about the QuickSIN?
Quick speech in noise test, used to determine someone’s SNR loss. Derived from the concept of SNR-50, what SNR are you 50% correct. Shows how directional mics can improve speech understanding.
How does QuickSIN occur?
- Speech in 1 channel, varying noise in the other
- 10 passages of speech read, testee repeats back
- volume of speech held constant at 70dB HL
- noise played at same time, volume change from 0-+25 dB
- switch from omnidirectional to directional
- provide formula where SNR loss varies from 0.5 dB-25.5 dB (low is good)
- determine if directional mics decrease SNR loss
Talk to me about HINT
- Hearing in Noise Test
- Similar to QuickSIN, assess ability to hear in noise & quiet
- volume of noise held constant, speech goes up or down depending on accuracy
- speech always comes from the front, noise moves.
Who was the HINT created for?
1) california peace officers
2) mild HL who struggle in noise
3) assess benefit of different programs
How does HINT scoring work?
- sentence played, if 50% correct, signal volume decreased
- vice versa
- SNR determined for all 4 conditions
- determine benefit and give realistic expectations
Talk to me about the WIN
- Word in Noise Test
- repeat words at varying volumes in presence of speech babbly
- presented in headphones, not speakers
- what you use as speech & noise depends on PTA
-
How do you score the WIN?
- How well test does at each SNR plotted
- Compare individual SNR loss to normative
- Higher SNR loss = poorer performance
- As you reduce speech volume, # correct decreases
What examples of subjective outcome measures were discussed in class?
1) Client Oriented Scale of Improvement
2) International Outcome inventory
3) Hearing Performance Inventory
4) Hearing handicap inventory for the elderly
What does the audiologist hope to determine with subjective outcome measures?
1) How much HL has affected life
2) what areas do they hope to see improvement
3) how much improvements instruments provide
Who can cover hearing aids?
1) Private pay
2) Private Insurance
3) Third party payors
Talk to me about Private Pay for hearing aids.
- cost of HIs range from $400-3500
- price includes hearing aid, programming, verification, teaching and follow up
- ASSISTIVE DEVICES PROGRAM:
~ provide $500/ear every 5 years
~ need valid OHIP card
~ family physician needs to sign off
~ HA must be out of warranty, in need of
repair, and cost under $1500
