Paperdoi:10.1093/sleep/26.1.81
Further validation of actigraphy for sleep studies
Sleep 2003;26(1):81-85
TL;DR
Independent check of the cole-kripke-sleep-wake and sadeh-sleep-wake algorithms against lab PSG in 21 healthy volunteers (adaptation night, then simultaneous PSG + actigraphy). Minute-by-minute: 91% accuracy for both; sleep sensitivity 99% (Cole) / 97% (Sadeh); wake specificity only 34% (Cole) / 44% (Sadeh). Bland-Altman: actigraphy overestimated sleep latency, TST and sleep efficiency and underestimated awakenings.
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Abstract
Study objectivesActigraphy is generally compared to polysomnography (PSG), which has been considered the gold standard for sleep studies. The objective of the present study was to evaluate the concordance between PSG and two previously proposed algorithms (Cole et al, 1992; Sadeh et al, 1994) to analyze actigraphic recordings. The minute-by-minute agreement rate was evaluated through calculation of sensitivity, specificity, and accuracy. Regarding the sleep parameters, the concordance was performed through the Bland and Altman technique.DesignA night of adaptation to the sleep laboratory followed by simultaneous polysomnographic and actigraphic recordings throughout the night.Participants21 healthy volunteers.SettingA sleep laboratoryInterventionsNone.ResultsNinety-one percent of all PSG epochs were correctly identified by both algorithms, and this accuracy is reasonably satisfactory. The actigraphy was a sensitive method, with values of 99% and 97% for Cole's and Sadeh's algorithms, respectively. However, actigraphy had a low specificity: 34% and 44% for Cole's and Sadeh's algorithms, respectively. The Bland and Altman technique showed that actigraphy systematically overestimated Sleep Latency, Total Sleep Time and Sleep Efficiency while it underestimated Intermittent Awakenings.ConclusionsThe results of this study show the utility of actigraphy as a useful method for assessment of sleep, despite its limitations regarding identification of waking epochs during sleep. The Bland and Altman concordance technique was revealed to be a powerful tool to evaluate how well actigraphy agreed with polysomnography. This technique, combined with calculations of sensitivity and specificity, appears to be the most adequate procedure for the assessment of concordance.
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Results on ChatPPG leaderboards · 1
All leaderboards| Leaderboard | Method | Result | Rank |
|---|---|---|---|
| own-sao-paulo-psg-de-souza-2003 specificitySleep/wake detection (actigraphy-style) | Further validation of actigraphy for sleep studies | 0.34specificity, higher is better | #1 of 1 |
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de Souza, L., Benedito-Silva, A. A., Pires, M. L., Poyares, D., Tufik, S., & Calil, H. M. (2003). Further validation of actigraphy for sleep studies. Sleep 2003, 26(1), 81–85. https://doi.org/10.1093/sleep/26.1.81
de Souza, L, A A Benedito-Silva, M L Pires, D Poyares, S Tufik, and H M Calil. 2003. "Further validation of actigraphy for sleep studies." Sleep 2003 26 (1): 81–85. https://doi.org/10.1093/sleep/26.1.81.
de Souza, L., Benedito-Silva, A. A., Pires, M. L., Poyares, D., Tufik, S. and Calil, H. M. (2003) 'Further validation of actigraphy for sleep studies', Sleep 2003, 26(1), pp. 81–85. doi: 10.1093/sleep/26.1.81.
de Souza, L, et al. "Further validation of actigraphy for sleep studies." Sleep 2003, vol. 26, no. 1, 2003, pp. 81–85. https://doi.org/10.1093/sleep/26.1.81.
L. de Souza, A. A. Benedito-Silva, M. L. Pires, D. Poyares, S. Tufik, and H. M. Calil, "Further validation of actigraphy for sleep studies," Sleep 2003, vol. 26, no. 1, pp. 81–85, 2003, doi: 10.1093/sleep/26.1.81.
@article{souza2003further,
title = {{Further validation of actigraphy for sleep studies}},
author = {de Souza, L. and Benedito-Silva, A. A. and Pires, M. L. and Poyares, D. and Tufik, S. and Calil, H. M.},
year = {2003},
journal = {Sleep 2003},
volume = {26},
number = {1},
pages = {81--85},
doi = {10.1093/sleep/26.1.81}
}Added to the ChatPPG research hub
