Sequential daily relations of sleep, pain intensity, & attention to pain among women with fibromyalgia (FM)

Fifty women with fibromyalgia syndrome (FS) recorded their sleep

quality, pain intensity, and attention to pain for 30 days,

using palm-top computers programmed as electronic

interviewers. They described their previous night’s sleep

quality within one-half hour of awakening each day, and at

randomly selected times in the morning, afternoon, and evening

rated their present pain in 14 regions and attention to pain

during the last 30 min. We analyzed the 30-day aggregates

cross-sectionally at the across-persons level and the pooled

data set of 1500 person-days at the within-persons level after

adjusting for between-persons variation and autocorrelation.

Poorer sleepers tended to report significantly more pain. A

night of poorer sleep was followed by a significantly more

painful day, and a more painful day was followed by a night of

poorer sleep. Pain attention and sleep were unrelated at the

across-persons level of analysis. But there was a significant

bi-directional within-person association between pain

attention and sleep quality that was not explained by changes

in pain intensity.

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