Background & Aims
Body perception disturbances are now recognized as a typical and relevant clinical feature among people with Complex Regional Pain Syndrome (CRPS) 1,2.
With a prevalence ranging from 54 to 84% 3–5, they are believed to be more frequent and more intense in CRPS compared with other chronic limb pain.
To assess body perception disturbances, different tools exist. Among them, the Bath CRPS Body Perception Disturbances (B-BDPS) is the most used(6). It has been translated and validated in German(7) and Japanese(8). It is composed of seven items exploring sense of ownership, limb position awareness, attention paid to the limb, emotional feelings, desire to amputate, perception of discrepancies between what is felt and the aspect of the limb and a drawing of the mental image of the limb (9,10).
Using translation and cross-cultural adaptation guidelines (11), we translated the B-BPDS into French.
The aim of this work is to assess psychometric properties of the B-BPDS French version.
Methods
Adult participants diagnosed with CRPS were recruited during a routine appointment in specialized pain centers. Participants with severe psychiatric disorders or unable to read or speak French were excluded. They were informed and gave oral consent before data collection.
The following aspects of the French version of the Bath CRPS BPD Scale (B-BPDS-F) were assessed: internal consistency (Cronbach’s ? coefficient), test-retest reliability (Intra-Class Correlation ICC) and criterion validity. Criterion validity was assessed through a correlation analysis (Spearman rank correlation) between B-BPDS-F and pain intensity, CRPS Severity Score and Quality of Life (PROMIS-29). Test-retest reliability was assessed with a second evaluation of the B-BPDS-F one week after the first.
All statistical analyses were performed using SAS version 9.4 (SAS Institute, Cary, NC, USA).
Results
In total, 32 participants were included in the study and 21 completed the scale a second time.
No floor and ceiling effects were observed.
Internal consistency of the total scale is questionable (Cronbach’s ? = 0.65). When removing the item with the lowest item-total correlation, i.e. item 3 on attention, Cronbach’s ? = 0.70, indicating adequate internal consistency.
ICC was found to be acceptable (ICC = 0.92 [0.81;0.96]).
B-BPDS-F showed significant correlations with average pain at rest (Spearman’s rho (r) =0.34), PROMIS 29 total score (r=0.40) and anxiety/depression dimensions of PROMIS 29 (r=0.35).
Conclusions
This study provides a validation of the B-BPDS-F with analysis of its psychometric properties.
Our findings are in line with previous work and translations (7,8,10).
It allows assessment in clinical and research settings with French patients with CRPS.
References
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Presenting Author
Sessi Acapo
Poster Authors
Sessi ACAPO
PhD
University of Nantes
Lead Author
Topics
- Specific Pain Conditions/Pain in Specific Populations: Complex Regional Pain Syndrome (CRPS)