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J Bras Pneumol. 2009 Sep;35(9):877-83.

Portuguese-language version of the Epworth sleepiness scale: validation for use in Brazil.

[Article in English, Portuguese]

Author information

1
Santa Maria University Hospital, Federal University of Santa Maria, Santa Maria, Brazil. alessa.bertolazzi@terra.com.br

Abstract

OBJECTIVE:

The aim of this study was to develop a Portuguese-language version of the Epworth sleepiness scale (ESS) for use in Brazil.

METHODS:

The steps involved in creating the ESS in Brazilian Portuguese (ESS-BR) were as follows: translation; back-translation; comparison (by a committee) between the translation and the back-translation; and testing in bilingual individuals. The ESS-BR was applied to a group of patients who were submitted to overnight polysomnography in order to identify obstructive sleep apnea-hypopnea syndrome (OSAHS), insomnia and primary snoring. A control group was composed of subjects with a history of normal sleep habits, without reported snoring.

RESULTS:

A total of 114 patients and 21 controls were included. The 8-item scores of the ESS-BR had an overall reliability coefficient of 0.83. The study group was composed of 59 patients with OSAHS, 34 patients with primary snoring and 21 patients with insomnia. One-way ANOVA demonstrated significant differences in ESS-BR scores among the four diagnostic groups (p < 0.001). Post-hoc tests between groups showed that the ESS-BR scores of the patients with insomnia did not differ from those of the controls (p > 0.05). The ESS-BR scores were significantly higher for OSAHS patients and for primary snorers than for controls (p < 0.05). In addition, the scores for OSAHS patients were significantly higher than were those for primary snorers (p < 0.05).

CONCLUSIONS:

The results of the present study demonstrate that the ESS-BR is a valid and reliable instrument for the assessment of daytime sleepiness, equivalent to its original version when applied to individuals who speak Brazilian Portuguese.

PMID:
19820814
[Indexed for MEDLINE]
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