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Validation of the NoSAS score for screening sleep disordered breathing; A sleep clinic-based study in Turkey.

PMID: 32967411 (view PubMed database entry)
DOI: 10.3906/sag-2002-54 (read at publisher's website )

Burcu Oktay Arslan, Zeynep Zeren UÇar, ÖzgÜr Batum, Mehmet Nurullah Orman,

BACKGROUND/AIM:NoSAS score is a new tool for identification of high-risk patients for sleep disordered breathing (SDB). The aim of this study was to validate the NoSAS score in sleep clinical population in Turkey and, compare its performance with Epworth Sleepiness Scale (ESS), STOP-Bang and Berlin questionnaires for high-risk SDB. MATERIALS AND METHODS:This was a retrospective study. Patients who had full-night PSG examination between 01.03.2017 and 01.01.2018 at the sleep center of our hospital were included in the study. Demographic characteristics, anthropometrics measurements, ESS, STOP-Bang and Berlin scores were collected from the existing data of the patients. The NoSAS score was subsequently calculated based on available data. Predictive parameters for each screening questionnaires were calculated to compare the discriminative power of those for high-risk SDB. RESULTS:A total of 450 patients were included in the study. The sensitivity, specificity, PPV and NPV of the NoSAS score were 81%, 51.2%, 88.2%, 37.5% for AHI?5 event/h and 84.5%, 38.2%, 66%, 63.4% for AHI?15 event/h respectively. AUC for the NoSAS score, STOP-Bang questionnaire, Berlin questionnaire and ESS were 0.740, 0.737, 0.626, 0.571 for AHI?5 events/h and 0.715, 0.704, 0.574, 0.621 for AHI?30 events/h. NoSAS score had a false negative rate of 2.9% for severe SDB. CONCLUSION:NoSAS score had a good degree of differentiation for SDB and can be used as an easily applicable, subjective and effective screening tool in sleep clinical population in Turkey. Not only in moderate to severe SDB, but also in mild SDB NoSAS score performed better than other three screening tools.

Turk J Med Sci (Turkish journal of medical sciences)
[2020, :]

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