TY  - JOUR
PY  - 2021//
TI  - The accuracy of the THIM wearable device for estimating sleep onset latency
JO  - Journal of clinical sleep medicine
A1  - Whitelaw, Ashwin
A1  - Scott, Hannah
A1  - Lack, Leon
A1  - Lovato, Nicole
A1  - Canty, Alex
SP  - ePub
EP  - ePub
VL  - ePub
IS  - ePub
N2  - STUDY OBJECTIVES: THIM is a wearable device designed to accurately estimate sleep onset. This article presents two studies that tested the original (Study 1) and a  refined (Study 2) THIM sleep onset algorithms compared to polysomnography (PSG). <br><br>METHODS: Twelve (Study 1) and twenty (Study 2) individuals slept in the laboratory  on two nights where participants underwent THIM-administered sleep onset trials with  simultaneous PSG recording. Participants attempted to fall asleep whilst using THIM,  which woke them once it determined sleep onset. <br><br>RESULTS: In Study 1, there was no  significant difference between PSG (Mean, M = 1.94 min, SD = 1.32) and THIM-sleep  onset latency (M = 2.05 min, SD = 1.38) on the first or second night, p >.07. There  were moderate correlations between PSG and THIM on both nights, r((s)) >.57, p <.001. On 23.74% of trials, PSG-sleep onset could not be determined before THIM ended  the trial. With a revised THIM algorithm in Study 2, there was no significant  difference between PSG (M = 3.41 min, SD = 2.21) and THIM-sleep onset latency (M =  3.65 min, SD = 2.18), p =.25, strong correspondence between the two devices, r((s))  >.73, p <.001, narrow levels of agreement on Bland-Altman plots, and significantly  less trials where PSG-sleep onset had not occurred (10.24%), p =.04. <br><br>CONCLUSIONS:  THIM showed a high degree of correspondence and agreement with PSG for estimating  sleep onset. Future research will investigate whether THIM is accurate with an  insomnia sample for clinical purposes.<p />  <p>Language: en</p>
LA  - en
SN  - 1550-9389
UR  - http://dx.doi.org/10.5664/jcsm.9070
ID  - ref1
ER  -