Measuring treatment outcomes in comorbid insomnia and fibromyalgia: concordance of subjective and objective assessments

Jennifer Marie Mundt, Earl C. Crew, Kendra Krietsch, Alicia J. Roth, Karlyn Vatthauer, Michael E. Robinson, Roland Staud, Richard B. Berry, Christina S. Mccrae*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Study Objectives: In insomnia, actigraphy tends to underestimate wake time compared to diaries and PSG. When chronic pain co-occurs with insomnia, sleep may be more fragmented, including more movement and arousals. However, individuals may not be consciously aware of these arousals. We examined the baseline concordance of diaries, actigraphy, and PSG as well as the ability of each assessment method to detect changes in sleep following cognitive behavioral therapy for insomnia (CBT-I). Methods: Adults with insomnia and fibromyalgia (n = 113) were randomized to CBT-I, CBT for pain, or waitlist control. At baseline and posttreatment, participants completed one night of PSG and two weeks of diaries/actigraphy. Results: At baseline, objective measures estimated lower SOL, higher TST, and higher SE than diaries (ps < 0.05). Compared to PSG, actigraphic estimates were higher for SOL and lower for WASO (ps < 0.05). Repeated measures ANOVAs were conducted for the CBT-I group (n = 15), and significant method by time interactions indicated that the assessment methods differed in their sensitivity to detect treatment-related changes. PSG values did not change significantly for any sleep parameters. However, diaries showed improvements in SOL, WASO, and SE, and actigraphy also detected the WASO and SE improvements (ps < 0.05). Conclusions: Actigraphy was generally more concordant with PSG than with diaries, which are the recommended assessment for diagnosing insomnia. However, actigraphy showed greater sensitivity to treatment-related changes than PSG; PSG failed to detect any improvements, but actigraphy demonstrated changes in WASO and SE, which were also found with diaries. In comorbid insomnia/fibromyalgia, actigraphy may therefore have utility in measuring treatment outcomes.

Original languageEnglish (US)
Pages (from-to)215-223
Number of pages9
JournalJournal of Clinical Sleep Medicine
Volume12
Issue number2
DOIs
StatePublished - Jan 1 2016

Keywords

  • Actigraphy
  • Assessment
  • Chronic pain
  • Clinical trial
  • Cognitive behavioral therapy
  • Fibromyalgia
  • Insomnia
  • Polysomnography

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Neurology
  • Clinical Neurology

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