Oral Communication

Cross-cultural adaptation, reliability, internal consistency and validation of the Trinity Amputation and Prosthetic Experience Scales-Revised (TAPES-R) for French speaking patients with lower limb amputation.

Dr Isabelle LOIRETa, Dr Philippe VUISTINIERb, Prof Jean PAYSANTa, Dr Yvan ARLETTAZc, Dr Mathieu ASSALd, Dr Olivier BORENSe, Dr Laure HUCHONf, Dr Noël MARTINETa, Dr Aurélie VOUILLOZg, Dr Francois LUTHIg

a Institut Régional de Réadaptation de Nancy, UGECAM Nord Est, b Clinique Romande de Réadaptation de Sion, c Hôpital de Martigny, Service de Chirurgie orthopédique et traumatologique, d Clinique de la Colline, Chirurgie orthopédique CH Genève, e CHUV, Service de Chirurgie orthopédique et traumatologique, Lausanne, f CHU Lyon, g Clinique Romande de Réadaptation-SION

Aim. The aim of this study was the French cross-cultural adaptation and validation of The Trinity Amputation and Prosthetic Experience Scales-Revised (TAPES-R-F), in a lower limb amputation population. This self-reported multidimensional amputee-specific questionnaire [1] evaluates with 33 items psychosocial adjustment (3 subscales), activity restriction (1 subscale) and satisfaction with prosthesis (2 subscales).

Patients and methods. 129 patients with a mean age of 62 years and with lower limb amputations for at least 1 year were recruited in 5 clinical centers. Translation and cross-cultural adaptation were made according to international guidelines. Internal consistency of each subscale was measured with Cronbach’s alpha. Test-retest reliability was assessed by intraclass correlation in a sub- group of 24 subjects who completed the TAPES-R twice with an interval of 7 days. Construct validity was estimated through correlations with 2 main components of SF-36 (MCS, PCS). Correlations were also calculated with 3 scales of the Brief Pain Inventory (BPI).

Results. Cronbach’s alpha was high, ranging from 0.85 to 0.95. Reliability was acceptable to high (ICC=0.72 to 0.91) for all subscales with the exception of the Social adjustment (ICC=0.67) and Adjustment to limitation (ICC=0.42) subscales. The 2 component of SF-36 was significantly correlated with all subscales (PCS: r=0.24 to 0.66); MCS: r=0.30 to 0.58), except with Aesthetic satisfaction and Adjustment to limitation. Regarding the BPI, significant correlations were found for all subscales (r=-0.20 to-0.68) with the exception of Adjustment to limitation. Ceiling or floor effects (>15%) were found for all but Activity restriction and Functional satisfaction scales.

Discussion. The TAPES-R-F has acceptable psychometric properties for most of its subscales. Our results may suggest that the French version is more useful in a population research perspective than in an individual perspective. Other studies are necessary to clarify the role and the psychometric properties of this measurement.

[1]Gallagher P,Maclachlan M. The Trinity Amputation and Prosthesis Experience Scales and quality of life in people with lower-limb amputation.Arch Phys Med Rehabil.2004; 85:730-6.

Keywords : Cross cultural adaptation, French, TAPES-R, psychometric properties, internal consistency, reproductibility, lower limb amputation population