Sleep (New York, N.Y.), 2017-04, Vol.40 (suppl_1), p.A122-A122
2017
Details
- Autor(en) / Beteiligte
- Titel
- 0330 AT-HOME ACTIGRAPHY VS IN-LABORATORY PSG IN INSOMNIA
- Ist Teil von
- Sleep (New York, N.Y.), 2017-04, Vol.40 (suppl_1), p.A122-A122
- Ort / Verlag
- US: Oxford University Press
- Erscheinungsjahr
- 2017
- Link zum Volltext
- Quelle
- Oxford Journals 2020 Medicine
- Beschreibungen/Notizen
- Abstract Introduction: Actigraphy (ACT) is widely used as an objective measure of sleep. It has validity in normal sleep, but its validity in insomnia with disturbed sleep remains equivocal. A critical issue in insomnia is ACT’s lack of specificity in detecting wakefulness. One approach to enhancing validity to PSG is taking multiple samples. We sought to determine how many nights of ACT sleep will best represent PSG in insomnia. Methods: Persons (N=16), aged 23–61 yrs, meeting DSM-V criteria for insomnia, a PSG sleep efficiency of ≤85%, no other sleep, psychiatric, or drug dependency disorders, and in good health were recruited. Following a screening 8-hr PSG participants returned home with Actiwatchs (Spectrum Plus, Phillips Healthcare, Bend OR) to be worn nightly for 7 consecutive nights. Instructions were spend 7–9 hrs in bed and press event markers when trying to sleep and arising in the morning. ACT data were analyzed by Phillips Actiware 6 software and PSGs according to the R&K scoring. The sleep parameters compared were total sleep time (TST), sleep efficiency (SE), sleep latency (LAT), wake after sleep onset (WASO), and number of awakenings (NWAK). Results: The best relation between ACT and PSG was found on the ACT mean of the first 3 nights following the PSG (TST r = .61; SE r = .83; LAT r = .58, all p<.05). ACT means over 4 or 7 nights did not relate better than 3 night means. WASO and NWAK correlations never achieved statistical significance. Comparing 3 night ACT means to PSG, ACT overestimated TST (t = -1.76, p<.10) and SE (t = -2.82, p<.01) and underestimated WASO (t= 3.54, p<.001). Conclusion: Three-night ACT means best represent PSG in insomnia, producing moderate correlations. In insomnia ACT insensitivity to wakefulness yields overestimation of SE and underestimation of WASO. Support (If Any): NIDA, grant#: R01DA038177 awarded to Dr. Roehrs.