Benchmarks for the Dichotic Sentence Identification test in Brazilian Portuguese for ear and age

Andrade, Adriana Neves de; Gil, Daniela; Iorio, Maria Cecilia Martinelli

doi:10.1016/j.bjorl.2015.07.003

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Brazilian Journal of Otorhinolaryngology

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ORIGINAL ARTICLES • Braz. j. otorhinolaryngol. 81 (5) • Sep-Oct 2015 • https://doi.org/10.1016/j.bjorl.2015.07.003 copy

Benchmarks for the Dichotic Sentence Identification test in Brazilian Portuguese for ear and age^☆ ☆ Please cite this article as: Andrade AN, Gil D, Iorio MCM. Benchmarks for the Dichotic Sentence Identification test in Brazilian Portuguese for ear and age. Braz J Otorhinolaryngol. 2015;81:459-65. ^☆☆ ☆☆ Institution: Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil.

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

INTRODUCTION:

Dichotic listening tests should be used in local languages and adapted for the population.

OBJECTIVE:

Standardize the Brazilian Portuguese version of the Dichotic Sentence Identification test in normal listeners, comparing the performance for age and ear.

METHODS:

This prospective study included 200 normal listeners divided into four groups according to age: 13-19 years (GI), 20-29 years (GII), 30-39 years (GIII), and 40-49 years (GIV). The Dichotic Sentence Identification was applied in four stages: training, binaural integration and directed sound from right and left.

RESULTS:

Better results for the right ear were observed in the stages of binaural integration in all assessed groups. There was a negative correlation between age and percentage of correct responses in both ears for free report and training. The worst performance in all stages of the test was observed for the age group 40-49 years old.

CONCLUSIONS:

Reference values for the Brazilian Portuguese version of the Dichotic Sentence Identification test in normal listeners aged 13-49 years were established according to age, ear, and test stage; they should be used as benchmarks when evaluating individuals with these characteristics.

Keywords:
Hearing; Hearing tests; Auditory cortex; Speech discrimination test; Validity of tests; Spatial processing

Test stage	Ear	Comparison	p
Training	Right	13–19 years vs. 20–29 years	>0.999
		20–29 years vs. 30–39 years	0.643
		30–39 years vs. 40–49 years	>0.999
		13–19 years vs. 40–49 years	0.032^a
		13–19 years vs. 30–39 years	0.315
		20–29 years vs. 40–49 years	0.089
	Left	13–19 years vs. 20–29 years	0.597
		20–29 years vs. 30–39 years	0.199
		30–39 years vs. 40–49 years	0.236
		13–19 years vs. 40–49 years	0.063
		13–19 years vs. 30–39 years	>0.999
		20–29 years vs. 40–49 years	0.001^a

Integration	Right	13–19 years vs. 20–29 years	0.634
		20–29 years vs. 30–39 years	0.011^a
		30–39 years vs. 40–49 years	0.711
	Left	13–19 years vs. 20–29 years	0.482
		20–29 years vs. 30–39 years	0.015^a
		30–39 years vs. 40–49 years	0.068

Test stage	Ear	Age range
		13–19 years	20–29 years	30–39 years	40–49 years
Training	Right	80%	80%	60%	60%
Training	Left	50%	60%	60%	40%

Integration	Right	80%	80%	70%	70%
Integration	Left	70%	60%	60%	60%

Directed report	Right	90%	90%	90%	80%
Directed report	Left	90%	90%	90%	70%

Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Sede da Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico Facial, Av. Indianópolia, 1287, 04063-002 São Paulo/SP Brasil, Tel.: (0xx11) 5053-7500, Fax: (0xx11) 5053-7512 - São Paulo - SP - Brazil
E-mail: revista@aborlccf.org.br

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[1] * Corresponding author. E-mail:adriandrad@hotmail.com (A.N. Andrade).