Nearly all patients with chronic pain experience sleep-wake disturbances, with none achieving 85% sleep efficiency.
In a cohort of 100 patients with chronic pain, 95% had poor sleep quality based on PSQI scores, 67% had clinical insomnia (ISI ≥ 15), and average sleep efficiency was 64% (range 28-81%). A significant correlation was found between sleep efficiency and physical activity level (rs=0.31, 95% CI 0.10-0.50).
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Nearly all patients with chronic pain experience sleep-wake disturbances, with none achieving 85% sleep efficiency. The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Nearly all patients with chronic pain experience sleep-wake disturbances, with none achieving 85% sleep efficiency.
This conclusion is most relevant to: 100 patients with chronic pain attending a specialist-level pain clinic..
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Sleep-Wake Disturbances in Patients With Chronic Pain-Associations With Physical Activity Levels. (European journal of pain (London, England), 2026) —
How It Works
The proposed biological pathway:
- ▸Chronic pain disrupts sleep regulation
- ▸Poor sleep exacerbates pain perception
- ▸Reduced physical activity due to pain severity
- ▸Result: High prevalence of insomnia and low sleep efficiency
Who Might Benefit
Evidence fit by population:
- ▸100 patients with chronic pain attending a specialist-level pain clinic.
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Cross-sectional design prevents causal inference
- ▸Single-center study with small sample size (n=100)
- ▸Self-report measures may introduce bias
Frequently Asked Questions
What percentage of chronic pain patients had clinical insomnia?▼
67% of patients had clinical insomnia based on an Insomnia Severity Index score of 15 or higher.
Was there a link between physical activity and sleep quality?▼
Yes, a statistically significant correlation (rs=0.31) was found between sleep efficiency and physical activity level.
What was the average sleep duration in this study?▼
The average sleep duration was 5 hours and 30 minutes, ranging from 1 hour 46 minutes to 9 hours 52 minutes.
Did any patients achieve normal sleep efficiency?▼
No, none of the patients reached 85% sleep efficiency, which is considered indicative of stable sleep.
References
- 1.Varkey E, Olsson M, Piasecki A, Hedner J, Grote L, Börjesson M, Arvidsson D, Andréll P. “Sleep-Wake Disturbances in Patients With Chronic Pain-Associations With Physical Activity Levels..” European journal of pain (London, England), 2026. PMID: 42410897 DOI: 10.1002/ejp.70330