How to measure snoring: A systematic review

Abstract Objective Snoring is the most common and main symptom of obstructive sleep apnea. therefore, it should be managed effectively. Various methods of measuring snoring are available, and even if the measurement is performed the same way, communication is difficult because there are no common reference values between the researcher and clinician with regard to intensity and frequency, among other variables. In other words, no consensus regarding measurement has been reached. Therefore, this study aimed to review the literature related to the measurement of snoring, such as measurement devices, definitions, and device locations. Methods A literature search based on the PubMed, Cochrane, and Embase databases was conducted from the date of inception to April 30, 2022. Twenty-seven articles were included in this study. Papers that mentioned only the equipment used for measurement and did not include individual details were excluded from the study. Results Three representative methods for measuring snoring emerged. These include (1) a microphone, which measures snoring sound; (2) piezoelectric sensor, which measures snoring vibration; and (3) nasal transducer, which measures airflow. In addition, recent attempts have been made to measure snoring using smartphones and applications. Conclusion Numerous studies have investigated both obstructive sleep apnea and snoring. However, the methods of measuring snoring and snoring-related concepts vary across studies. To understand the pathophysiology underlying obstructive sleep apnea and address sleep-related diseases, consensus in the academic community on how to measure and define snoring is required.