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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Psychometric properties of the Lithuanian version of Sleep Apnea Quality of Life Index (a pilot study)

1
Department of Otorhinolaryngology
2
Department of Pulmonology and Immunology
3
Institute of Cardiology, Kaunas University of Medicine, Lithuania
*
Author to whom correspondence should be addressed.
Medicina 2008, 44(4), 296; https://doi.org/10.3390/medicina44040038
Received: 4 February 2008 / Accepted: 18 April 2008 / Published: 23 April 2008
Objective. To arrange and test for its psychometric properties Lithuanian version of Sleep Apnea Quality of Life Index and assess quality of life among snoring and obstructive sleep apnea patients before and after the treatment.
Material and methods
. Cross-cultural adaptation of Lithuanian version of Calgary Sleep Apnea Quality of Life Index was accomplished according to generally accepted methodology. In total, 36 (29 males and 7 females) patients (mean age, 41.1±9.7 years) suffering from socially disturbing snoring and obstructive sleep apnea were included into the study. All patients underwent complete full-night polysomnography (mean apnea/hypopnea index, 12.7±11.2) and were treated with two sessions of radiofrequency tissue ablation at the palatal and tong base (if it was necessary) levels. Lithuanian version of the Calgary Sleep Apnea Quality of Life Index was presented before the treatment with radiofrequency tissue ablation and in the period of 2 to 3 months after the treatment. Thirty-five patients repeated the same questionnaire after three weeks to assess the reliability of scores.
Results. The Cronbach’s α coefficients of internal reliability were above the standard (0.7 for groups) in all subdomains and domains. Test-retest correlation coefficients for each domain (ranged from 0.92 to 0.94) were statistically significant (P<0.0001). Lithuanian version of the questionnaire was found to be responsive to clinical change. A statistically significant difference in the mean Sleep Apnea Quality of Life Index scores in the study group patients before and after the surgery was found in all daily functioning subdomains and social interactions domains.
Conclusions. Overall, the results of the present pilot study demonstrate that the Lithuanian version of Sleep Apnea Quality of Life Index is applicable for clinical purposes.
Keywords: obstructive sleep apnea; Calgary Sleep Apnea Quality of Life Index; snoring; radiofrequency ablation obstructive sleep apnea; Calgary Sleep Apnea Quality of Life Index; snoring; radiofrequency ablation
MDPI and ACS Style

Balsevičius, T.; Uloza, V.; Sakalauskas, R.; Miliauskas, S.; Rėklaitienė, R.; Bacevičienė, M. Psychometric properties of the Lithuanian version of Sleep Apnea Quality of Life Index (a pilot study). Medicina 2008, 44, 296.

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