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Itamar Medical Ltd.
Properties
Physical
Measurements
(Rigid parts)
Device transmitter
Mobile phone
Chest Sensor Accuracy
This section, for those using a configuration with a chest sensor, gives statistical performance
of the snoring and the body position measurements of the Chest Sensor.
1. Body Position
The body position was compared to the gold standard, manual scoring of the video recording
of 31 patients, in 1 minute's epochs (total of 7111 epochs) during sleep.
The Agreement between the device and the video recording was 90%.
Simple Kappa agreement value was 0.8185 (95% confidence level of 0.8059 and 0.8311).
2. Snoring
The snoring level was compared to a gold standard PSG dB-meter placed 1 meter from
patient's head. The study included 26 patients, and the analysis was done in 30sec epochs.
The correlation coefficient was calculated using Pearson method, assuming a linear relation
between the results of the two devices. A statistically significant correlation was calculated
between the two devices: r=0.65 p value<0.0001.
The next figure shows a scatter plot of sleep disturbance Index produced by WatchPAT device
and dB-meter, with linear regression line.
WatchPAT™ONE System
Main device
Dimensions
(L x W x H)
Weight
BLE Version
Operating frequency
Band Width
Transmitted Power
Operating range
Antenna type
BLE Profile Type
Operating System
BLE Version
Network
Storage Required
Description
Device (Enclosure): 60mm*55mm*18mm
Device (Enclosure): 38 gr (without battery)
4.0
2.4 GHz
250 KHz
4dBm
5m indoor
Printed
UART
Android 5.0 minimum iOS 10 minimum
4.0
Wi-Fi / Cellular
>120MB
53
Operation Manual
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