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Symptom-Based Subgroups of Koreans With Obstructive Sleep Apnea
Jinyoung Kim1,2, Brendan T Keenan2, Diane C Lim2,3,4
1University of Pennsylvania School of Nursing, Philadelphia, Pennsylvania.
Summary
Three obstructive sleep apnea (OSA) subgroups identified in Iceland were also found in a Korean population. These OSA symptom clusters appear applicable across diverse ethnicities and study groups.
Area of Science:
- Sleep Medicine
- Pulmonology
- Epidemiology
Background:
- Obstructive sleep apnea (OSA) is a common sleep disorder.
- Previous research identified three distinct clinical subgroups in Icelandic OSA patients: excessively sleepy, minimally symptomatic, and disturbed sleep.
- The applicability of these subgroups to other populations remains to be confirmed.
Purpose of the Study:
- To validate the three-subgroup classification of obstructive sleep apnea (OSA) in a Korean population-based cohort.
- To assess the generalizability of OSA symptom clusters across different ethnicities.
Main Methods:
- Latent class analysis was performed on data from 422 moderate to severe OSA cases diagnosed via home sleep studies in a Korean cohort.
- Participants completed questionnaires detailing sleep symptoms, comorbidities, and medication use.
Main Results:
- A three-cluster solution was optimal, mirroring the Icelandic Sleep Apnea Cohort (ISAC) findings.
- The minimally symptomatic subgroup was the most prevalent (55.7%) in the Korean cohort.
- While no differences in apnea-hypopnea index (AHI) or BMI were observed between subgroups, the disturbed sleep subgroup was older and comprised more females.
Conclusions:
- The three-symptom cluster solution for obstructive sleep apnea (OSA) appears to be broadly applicable, transcending ethnic and population differences.
- This classification may aid in a more nuanced understanding and management of OSA globally.
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