Impact of social-functioning and sleep on quality of life in chronic inflammatory demyelinating polyneuropathy test

Christina Englezou, Kabir K. Nazeer, Yusuf A. Rajabally*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Introduction /Aims The impact of impairment of social functioning and sleep on health-related quality of life (HR-QoL), is unknown in chronic inflammatory demyelinating polyneuropathy (CIDP). The value of the Chronic Acquired Polyneuropathy Patient-Reported Index (CAP-PRI) to identify potential social functioning and sleep issues is equally unknown. Methods We performed a cross-sectional evaluation of social functioning and sleep using the “Scales for Outcomes in Parkinson’s Disease” (SCOPA) in 40 subjects with clinically-stable CIDP through a structured questionnaire. We assessed HR-QoL through the CAP-PRI. Disability was evaluated through the Overall Neuropathy Limitation Score (ONLS). Results SCOPA social functioning scores were impaired at least “a little” per averaged item in >50% of subjects, and at least “quite a bit” per averaged item in >20%. Most affected items were (i) difficulty with work/household/other chores (ii) difficulties with hobbies/sport/leisure activities. SCOPA sleep sub-scores indicated at least “a little concern” for night-time sleep in nearly 50% of subjects. Abnormal sleep timing was rare. Associations were found between both SCOPA social-functioning and SCOPA sleep scores and the CAP-PRI. Linear regression demonstrated the SCOPA social-functioning score was independently associated with the CAP-PRI. The CAP-PRI showed high association with disability scores, good internal consistency, absence of ceiling effect, absence of significant floor-effect, and good criteria-related as well as construct-related validity. Discussion Social functioning and night-time sleep are frequently affected in CIDP and impact on HR-QoL. In contrast to traditional disability scales, the CAP-PRI additionally allows adequately capturing these impairments and may represent an adequate holistic outcome measure.

testing changes
Original languageEnglish
Article number108017
Number of pages4
JournalClinical Neurology and Neurosurgery
Early online date17 Oct 2023
Publication statusPublished - Nov 2023

Bibliographical note

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (


  • Chronic inflammatory demyelinating polyneuropathy
  • Immunoglobulins
  • Outcome measures
  • Response
  • Treatment


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