Assessing sleep disturbance in low back pain: the validity of portable instruments.

Although portable instruments have been used in the assessment of sleep disturbance for patients with low back pain (LBP), the accuracy of the instruments in detecting sleep/wake episodes for this population is unknown. This study investigated the criterion validity of two portable instruments (Armb...

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Autores principales:	Saad M Alsaadi, James H McAuley, Julia M Hush, Delwyn J Bartlett, Zoe M McKeough, Ronald R Grunstein, George C Dungan, Chris G Maher
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9bb06c95036840bb871cbb19388f4854
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spelling	oai:doaj.org-article:9bb06c95036840bb871cbb19388f48542021-11-18T08:21:33ZAssessing sleep disturbance in low back pain: the validity of portable instruments.1932-620310.1371/journal.pone.0095824https://doaj.org/article/9bb06c95036840bb871cbb19388f48542014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24763506/?tool=EBIhttps://doaj.org/toc/1932-6203Although portable instruments have been used in the assessment of sleep disturbance for patients with low back pain (LBP), the accuracy of the instruments in detecting sleep/wake episodes for this population is unknown. This study investigated the criterion validity of two portable instruments (Armband and Actiwatch) for assessing sleep disturbance in patients with LBP. 50 patients with LBP performed simultaneous overnight sleep recordings in a university sleep laboratory. All 50 participants were assessed by Polysomnography (PSG) and the Armband and a subgroup of 33 participants wore an Actiwatch. Criterion validity was determined by calculating epoch-by-epoch agreement, sensitivity, specificity and prevalence and bias- adjusted kappa (PABAK) for sleep versus wake between each instrument and PSG. The relationship between PSG and the two instruments was assessed using intraclass correlation coefficients (ICC 2, 1). The study participants showed symptoms of sub-threshold insomnia (mean ISI = 13.2, 95% CI = 6.36) and poor sleep quality (mean PSQI = 9.20, 95% CI = 4.27). Observed agreement with PSG was 85% and 88% for the Armband and Actiwatch. Sensitivity was 0.90 for both instruments and specificity was 0.54 and 0.67 and PABAK of 0.69 and 0.77 for the Armband and Actiwatch respectively. The ICC (95%CI) was 0.76 (0.61 to 0.86) and 0.80 (0.46 to 0.92) for total sleep time, 0.52 (0.29 to 0.70) and 0.55 (0.14 to 0.77) for sleep efficiency, 0.64 (0.45 to 0.78) and 0.52 (0.23 to 0.73) for wake after sleep onset and 0.13 (-0.15 to 0.39) and 0.33 (-0.05 to 0.63) for sleep onset latency, for the Armband and Actiwatch, respectively. The findings showed that both instruments have varied criterion validity across the sleep parameters from excellent validity for measures of total sleep time, good validity for measures of sleep efficiency and wake after onset to poor validity for sleep onset latency.Saad M AlsaadiJames H McAuleyJulia M HushDelwyn J BartlettZoe M McKeoughRonald R GrunsteinGeorge C DunganChris G MaherPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 4, p e95824 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Saad M Alsaadi James H McAuley Julia M Hush Delwyn J Bartlett Zoe M McKeough Ronald R Grunstein George C Dungan Chris G Maher Assessing sleep disturbance in low back pain: the validity of portable instruments.
description	Although portable instruments have been used in the assessment of sleep disturbance for patients with low back pain (LBP), the accuracy of the instruments in detecting sleep/wake episodes for this population is unknown. This study investigated the criterion validity of two portable instruments (Armband and Actiwatch) for assessing sleep disturbance in patients with LBP. 50 patients with LBP performed simultaneous overnight sleep recordings in a university sleep laboratory. All 50 participants were assessed by Polysomnography (PSG) and the Armband and a subgroup of 33 participants wore an Actiwatch. Criterion validity was determined by calculating epoch-by-epoch agreement, sensitivity, specificity and prevalence and bias- adjusted kappa (PABAK) for sleep versus wake between each instrument and PSG. The relationship between PSG and the two instruments was assessed using intraclass correlation coefficients (ICC 2, 1). The study participants showed symptoms of sub-threshold insomnia (mean ISI = 13.2, 95% CI = 6.36) and poor sleep quality (mean PSQI = 9.20, 95% CI = 4.27). Observed agreement with PSG was 85% and 88% for the Armband and Actiwatch. Sensitivity was 0.90 for both instruments and specificity was 0.54 and 0.67 and PABAK of 0.69 and 0.77 for the Armband and Actiwatch respectively. The ICC (95%CI) was 0.76 (0.61 to 0.86) and 0.80 (0.46 to 0.92) for total sleep time, 0.52 (0.29 to 0.70) and 0.55 (0.14 to 0.77) for sleep efficiency, 0.64 (0.45 to 0.78) and 0.52 (0.23 to 0.73) for wake after sleep onset and 0.13 (-0.15 to 0.39) and 0.33 (-0.05 to 0.63) for sleep onset latency, for the Armband and Actiwatch, respectively. The findings showed that both instruments have varied criterion validity across the sleep parameters from excellent validity for measures of total sleep time, good validity for measures of sleep efficiency and wake after onset to poor validity for sleep onset latency.
format	article
author	Saad M Alsaadi James H McAuley Julia M Hush Delwyn J Bartlett Zoe M McKeough Ronald R Grunstein George C Dungan Chris G Maher
author_facet	Saad M Alsaadi James H McAuley Julia M Hush Delwyn J Bartlett Zoe M McKeough Ronald R Grunstein George C Dungan Chris G Maher
author_sort	Saad M Alsaadi
title	Assessing sleep disturbance in low back pain: the validity of portable instruments.
title_short	Assessing sleep disturbance in low back pain: the validity of portable instruments.
title_full	Assessing sleep disturbance in low back pain: the validity of portable instruments.
title_fullStr	Assessing sleep disturbance in low back pain: the validity of portable instruments.
title_full_unstemmed	Assessing sleep disturbance in low back pain: the validity of portable instruments.
title_sort	assessing sleep disturbance in low back pain: the validity of portable instruments.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/9bb06c95036840bb871cbb19388f4854
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Assessing sleep disturbance in low back pain: the validity of portable instruments.

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