Validation of Five Seasons Sleep Tracking Mat for the Diagnosis of Obstructive Sleep Apnea

Recruiting

• Conditions: Obstructive Sleep Apnea (OSA)

• Registration Number: NCT06875479
• Lead Sponsor: Shanghai 6th People's Hospital

Brief Summary

This study will evaluate and compare the diagnostic accuracy and effectiveness of the Five Seasons Sleep Tracking Mat with the gold standard, polysomnography.

Detailed Description

Given that obstructive sleep apnea (OSA) imposes a heavy disease burden, conducting effective public screening is regarded as a crucial step in health management and chronic disease prevention. Currently, the diagnosis of OSA relies on polysomnography (PSG) and manual scoring, which are constrained by equipment availability and personnel shortages, resulting in low efficiency, high costs, and scheduling difficulties. Additionally, PSG monitoring requires numerous contact-based sensors, leading to poor patient compliance. The lack of large-scale screening and long-term follow-up further restricts the implementation of standardized and evidence-based treatments. Developing new, effective, low- or zero-burden sleep monitoring devices to minimize sleep disruption while ensuring monitoring accuracy is, therefore, a key direction for future research.

The Five Seasons Sleep Tracking Mat (5S Sleep Tracking Mat) detects heartbeats, respiration, body movements, and snoring using ballistocardiogram (BCG) signals. The device is composed primarily of a control unit, monitoring mat, temperature/humidity sensor, power adapter, and light sensor. During operation, the device accurately captures the impact force of bodily movements at a high sampling rate of 2 kHz. It then uses proprietary signal processing and pre-trained AI models to extract heartbeat and respiratory waveforms, as well as body movements. Additionally, it automatically detects respiratory events, calculates the apnea-hypopnea index (AHI), and determines sleep stages. Since the monitoring mat only needs to be placed under the pillow without requiring direct contact with the body or wearable accessories, it is particularly suitable for home-based, long-term daily sleep monitoring.

In this study, researchers will use the current gold standard, PSG, as a reference to validate the Five Seasons Sleep Tracking Mat for sleep monitoring and OSA-assisted diagnosis.

Study Timeline

• Study First Submitted: 2025-03-09
• Study First Submitted QC: 2025-03-09
• Study First Posted: 2025-03-13
• Status Verified: 2025-04
• Last Update Submitted: 2025-04-15
• Last Update Posted: 2025-04-16
• Study Start: 2025-04-20
• Primary Completion: 2025-09-30
• Study Completion: 2025-09-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 400

Inclusion Criteria

• Participants between 18 and 70 years, with potential symptoms of snoring at night, daytime sleepiness, or self-reported poor sleep quality, suspected of having OSA.
• Participants who are willing to undergo overnight PSG.

Exclusion Criteria

• Participants with presence of severe cardiovascular or cerebrovascular diseases, or significant impairment of liver, kidney, or lung function.
• Participants with concurrent unstable respiratory diseases or other acute-phase respiratory illnesses.
• Participants using, at long term or currently, barbiturates, benzodiazepines, sedatives, or other medications that may affect sleep.
• Participants undergoing continuous positive airway pressure (CPAP) therapy or other sleep-related treatments on the study night.
• Participants coexisting insomnia, parasomnia, or other sleep disorders.
• Participants with psychiatric disorders.
• Participants refusing to sign the informed consent form.
• Participants unable to cooperate with the required examinations.
• Participants with any other conditions deemed unsuitable for inclusion by the investigators.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Diagnostic sensitivity (AHI = 5) of 5S Sleep Tracking Mat compared to PSG	Day 1	The proportion of participants with Apnea Hypopnea Index (AHI) ≥ 5 events per hour according to 5S Sleep Tracking Mat in participants with AHI ≥ 5 events per hour according to PSG scored with American Academy of Sleep Medicine (AASM) v2.6 Guidelines. The point estimation of diagnostic sensitivity of 5S Sleep Tracking Mat will be compared to the threshold of 0.8, with the half width of 95% confidence interval being no more than 0.1.
Diagnostic specificity (AHI = 5) of 5S Sleep Tracking Mat compared to PSG	Day 1	The proportion of participants with Apnea Hypopnea Index (AHI) ≥ 5 events per hour according to 5S Sleep Tracking Mat in participants with AHI ≥ 5 events per hour according to PSG scored with American Academy of Sleep Medicine (AASM) v2.6 Guidelines. The point estimation of diagnostic specificity of 5S Sleep Tracking Mat will be compared to the threshold of 0.8, with the half width of 95% confidence interval being no more than 0.1.

Secondary Outcome Measures

Name	Time	Method
Diagnostic sensitivity (AHI = 15) of 5S Sleep Tracking Mat compared to PSG	Day 1	The proportion of participants with Apnea Hypopnea Index (AHI) ≥ 15 events per hour according to 5S Sleep Tracking Mat in participants with AHI ≥ 15 events per hour according to PSG scored with American Academy of Sleep Medicine (AASM) v2.6 Guidelines. The point estimation of diagnostic sensitivity of 5S Sleep Tracking Mat will be compared to the threshold of 0.8, with the half width of 95% confidence interval being no more than 0.1.
Diagnostic specificity (AHI = 30) of 5S Sleep Tracking Mat compared to PSG	Day 1	The proportion of participants with Apnea Hypopnea Index (AHI) ≥ 30 events per hour according to 5S Sleep Tracking Mat in participants with AHI ≥ 30 events per hour according to PSG scored with American Academy of Sleep Medicine (AASM) v2.6 Guidelines. The point estimation of diagnostic specificity of 5S Sleep Tracking Mat will be compared to the threshold of 0.8, with the half width of 95% confidence interval being no more than 0.1.
Diagnostic sensitivity (AHI = 30) of 5S Sleep Tracking Mat compared to PSG	Day 1	The proportion of participants with Apnea Hypopnea Index (AHI) ≥ 30 events per hour according to 5S Sleep Tracking Mat in participants with AHI ≥ 30 events per hour according to PSG scored with American Academy of Sleep Medicine (AASM) v2.6 Guidelines. The point estimation of diagnostic sensitivity of 5S Sleep Tracking Mat will be compared to the threshold of 0.8, with the half width of 95% confidence interval being no more than 0.1.
Overall accuracy of 5S Sleep Tracking Mat at AHI = 5	Day 1	Using an AHI threshold of 5 for true positive and true negative classification, the overall accuracy is the percentage of total cases correctly classified.
Overall accuracy of 5S Sleep Tracking Mat at AHI = 15	Day 1	Using an AHI threshold of 15 for true positive and true negative classification, the overall accuracy is the percentage of total cases correctly classified.
Overall accuracy of 5S Sleep Tracking Mat at AHI = 30	Day 1	Using an AHI threshold of 30 for true positive and true negative classification, the overall accuracy is the percentage of total cases correctly classified.
Cohen's kappa of 5S Sleep Tracking Mat at AHI = 5	Day 1	Using an AHI threshold of 5 for determining true positive or true negative results, Cohen's kappa (κ) is the ratio of the difference between the observed agreement (Pa) and the expected agreement (Pe) to the maximum possible difference. When κ=1, the sleep mat's diagnosis perfectly matches the PSG diagnosis. When κ=0, the agreement is entirely due to random effects. When κ\<0, the sleep mat's diagnosis is completely inconsistent with the PSG diagnosis.
Cohen's kappa of 5S Sleep Tracking Mat at AHI = 15	Day 1	Using an AHI threshold of 15 for determining true positive or true negative results, Cohen's kappa (κ) is the ratio of the difference between the observed agreement (Pa) and the expected agreement (Pe) to the maximum possible difference. When κ=1, the sleep mat's diagnosis perfectly matches the PSG diagnosis. When κ=0, the agreement is entirely due to random effects. When κ\<0, the sleep mat's diagnosis is completely inconsistent with the PSG diagnosis.
Cohen's kappa of 5S Sleep Tracking Mat at AHI = 30	Day 1	Using an AHI threshold of 30 for determining true positive or true negative results, Cohen's kappa (κ) is the ratio of the difference between the observed agreement (Pa) and the expected agreement (Pe) to the maximum possible difference. When κ=1, the sleep mat's diagnosis perfectly matches the PSG diagnosis. When κ=0, the agreement is entirely due to random effects. When κ\<0, the sleep mat's diagnosis is completely inconsistent with the PSG diagnosis.
Area under the Receiver Operating Characteristic (ROC) Curve (AUC) at AHI = 5.	Day 1	The ROC of the 5S Sleep Tracking Mat will be drawn based on PSG diagnostic results. The 95% confidence interval of the AUC will be calculated using model-based estimation, with true positive/negative results determined with an AHI threshold of 5.
Area under the Receiver Operating Characteristic (ROC) Curve (AUC) at AHI = 15.	Day 1	The ROC of the 5S Sleep Tracking Mat will be drawn based on PSG diagnostic results. The 95% confidence interval of the AUC will be calculated using model-based estimation, with true positive/negative results determined with an AHI threshold of 15.
Area under the Receiver Operating Characteristic (ROC) Curve (AUC) at AHI = 30.	Day 1	The ROC of the 5S Sleep Tracking Mat will be drawn based on PSG diagnostic results. The 95% confidence interval of the AUC will be calculated using model-based estimation, with true positive/negative results determined with an AHI threshold of 30.
Intra-Class Correlation Coefficient (ICC) of Apnea Hypopnea Index (AHI)	Day 1	ICC between the AHI according to 5S Sleep Tracking Mat and the AHI according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of Total Sleep Time (TST)	Day 1	ICC between the TST according to 5S Sleep Tracking Mat and the TST according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of Sleep Latency (SL)	Day 1	ICC between the SL according to 5S Sleep Tracking Mat and the SL according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of Wake After Sleep Onset (WASO)	Day 1	ICC between the WASO according to 5S Sleep Tracking Mat and the WASO according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of the proportion of the stage 1 and 2 of Non Rapid Eye Movement (NREM) sleep	Day 1	ICC between the proportion of the stage 1 and 2 of NREM sleep according to 5S Sleep Tracking Mat and the proportion of the stage 1 and 2 of NREM sleep according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of the proportion of the stage 3 of Non Rapid Eye Movement (NREM) sleep	Day 1	ICC between the proportion of the stage 3 of NREM sleep according to 5S Sleep Tracking Mat and the proportion of the stage 3 of NREM sleep according to Polysomnography (PSG), using one-way random effects model.
Intra-Class Correlation Coefficient (ICC) of the proportion of Rapid Eye Movement (REM) sleep	Day 1	ICC between the proportion of REM sleep according to 5S Sleep Tracking Mat and the proportion of REM sleep according to Polysomnography (PSG), using one-way random effects model.
Bland-Altman Limits of Agreement (LOA) of Apnea Hypopnea Index (AHI)	Day 1	The mean and difference of AHI according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of Total Sleep Time (TST)	Day 1	The mean and difference of TST according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of Sleep Latency (SL)	Day 1	The mean and difference of SL according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of Wake After Sleep Onset (WASO)	Day 1	The mean and difference of WASO according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of the proportion of the stage 1 and 2 of Non Rapid Eye Movement (NREM) sleep	Day 1	The mean and difference of the proportion of the stage 1 and 2 of NREM sleep according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of the proportion of the stage 3 of Non Rapid Eye Movement (NREM) sleep	Day 1	The mean and difference of the proportion of the stage 3 of NREM sleep according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.
Bland-Altman Limits of Agreement (LOA) of the proportion of Rapid Eye Movement (REM) sleep	Day 1	The mean and difference of the proportion of REM sleep according to both 5S Sleep Tracking Mat and PSG are analyzed from the raw data. The Bland-Altman plot is created with the mean on the x-axis and the difference on the y-axis. The mean difference and the 95% limits of agreement (LOA) are calculated based on the plot which must fall within the clinically accepted threshold range.

Trial Locations

Locations (1)

Shanghai Sixth People's Hospital; 🇨🇳 Shanghai, Shanghai, China