development and validation of the spanish azbio sentence ... · spanish is the second most spoken...
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Alejandro Rivas, MD, Adriana Rivas, PhD, Luz Adriana Rincon, PhD, René Gifford, PhD, Tony Spahr, PhD, Leo Litvak, PhD, Michael Dorman, PhD
Development and Validation of the Spanish AzBio Sentence Corpus
The Otology Group of Vanderbilt
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Speaker Disclosure
Consultant for:- Advance Bionics- Cochlear- Med-El- Grace Medical- Stryker- Cook Medical
.
The Otology Group of Vanderbilt
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Spanish is the second most spoken language in the world today
• In US,– 41 million people aged five or
older speak Spanish at home.– Second most spoken language of
the United States– Second largest Spanish-speaking
population in the world after Mexico
• There are over 437 million native Spanish speakers around the world.
The Otology Group of Vanderbilt
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Test for Children in Spanish
The Otology Group of Vanderbilt
Parent Questionnaires• LittlEARS (0 – 24 mo)• IT-MAIS (0 – 36 )• PEACH (3 – 7 yo)
Language Evaluation• PPTV (>2.5yo)• PLS (0 - 6 yo)• CDI (8 – 30 mo) Auditory Performance
• ESP (3-8yo)
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Test for Adult in Spanish
The Otology Group of Vanderbilt
Sentence Recognition Evaluation
HINT (ceiling effect)
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There are limited measures of sentence recognition in Spanish with multiple talkers speaking at an
average conversational rate
The Otology Group of Vanderbilt
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Objective: Develop a Spanish version of AzBio sentence test
Goals:• Large number of equivalent lists• Quantify list variability• Limit ceiling effects in quiet
The Otology Group of Vanderbilt
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Sentence development2000 sentences recorded
Multiple Talkers (2 male, 2 female)Female: F0 = 204 & 216 HzMale: F0 = 108 & 110 Hz
Instructions to Talkers• Conversational speaking rate
• Natural speaking style• Do not over-enunciate• Do not over-articulate
(Do not be too easy to understand)
The Otology Group of Vanderbilt
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Intelligibility Estimate• 4 talkers, 2000 sentences• 5-channel CI Simulation
• Random order• 5 normal-hearing adults
Sentence intelligibility is the average percent correct
score from the 5 NH listeners
The Otology Group of Vanderbilt
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Sentence Selection• Maximize # of sentences
• Minimize range of performance• Mean score per list = 85% (NH vocoded scores)
• 230 Sentences per Talker• 46 Lists of 20 Sentences
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RESULTS• 10 CI users were presented all 46 lists at 60 dB SPL, in quiet• 4 lists were removed due to variability and/or duplicated sentences
42 equivalent lists of 20 sentences
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RESULTS
List VariabilityPreliminary data
2-list comparisons for7 patients
95% confidence interval based on Binomial Distribution Model (Thornton & Raffin 1978)
40 items (2 lists)
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List development & validation is a lengthy processAcross-list equivalency is possibleVariability can be characterized
We can never have enough lists!
Spanish AzBio Sentence Lists• Now available for across-study comparison in research
& clinical practice • Affords comparison across languages (more
investigation is needed)• Can be used for clinical evaluation (pre- and post-CI)
Lessons learned
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Questions