Measurement of Sleep in Chronic Traumatic Brain Injury: Relationship Between Self-report and Actigraphy.
Emily L Morrow, Hannah Mattis-Roesch, Kimberly Walsh and 1 others
PMID 37702663WHAT IT FOUND
Wrist monitor sleep duration and awakenings did not predict self-rated sleep quality or fatigue in adults with chronic moderate-severe TBI.
Short morning diaries did show their self-reported sleep duration closely matched monitor data.
Key findings
01In both groups, self-reported sleep duration and monitor-measured sleep duration were strongly correlated: r = 0.51 for non-injured peers and r = 0.59 for participants with TBI.
02Both groups reported fewer nighttime awakenings than the monitor captured: participants with TBI reported 11.43 fewer, and non-injured peers reported 13.29 fewer; group membership predicted this difference, but the correlation was poor.
03Monitor-measured sleep duration and nighttime awakenings did not predict self-reported sleep quality or morning fatigue in participants with TBI.
STILL TO COME
How it was doneWhat they foundWhat it means for OTs
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What it does not show
Only 92 of 100 completed participants had usable wrist monitor data, and some participants also missed diary timepoints, so the analysed sample was smaller than the recruited sample. Participants were all in the chronic phase of moderate-severe TBI and younger than 55, so the findings may not apply to acute injury or older adults. The sleep quality and fatigue diary scales were adapted but not validated against objective sleep data. Wrist monitor measures sleep and wake patterns, not sleep phases, so it may miss important aspects of sleep quality. Memory analyses were exploratory, and the study did not test whether sleep self-report accuracy extends to longer questionnaires or other daily habits.
Declared interests
The authors reported no conflicts of interest.
The easy way to misread this
Do not read the strong duration correlation as proof that all sleep self-report is reliable. Nighttime awakenings correlated poorly with the monitor, and monitor sleep duration did not predict sleep quality or fatigue.