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Joint Bone Spine
Volume 71, n° 4
pages 317-326 (juillet 2004)
Doi : 10.1016/j.jbspin.2003.04.004
Received : 11 February 2003 ;  accepted : 24 April 2003
The ability to change of three questionnaires for neck pain

Samantha  Wlodyka-Demaille a ,  Serge  Poiraudeau a * ,  Jean-François  Catanzariti b ,  François  Rannou a ,  Jacques  Fermanian c ,  Michel  Revel a
aDepartment of Physical and Rehabilitation Medicine, Service de Rééducation et de Réadaptation de l'Appareil locomoteur et des Pathologies du Rachis, Hôpital Cochin AP-HP, Université René Descartes, 27, rue du Fbg Saint-Jacques, 75014 Paris cedex 14, France 
bOutpatient Clinic in Physical and Rehabilitation Medicine, 74, rue Jeanne d'Arc, 59000 Lille, France 
cDepartment of Biostatistics, Hôpital Necker AP-HP, Université René Descartes, 149-161, rue de Sèvres, 75015 Paris, France 

*Corresponding author.

Objective. - To assess the sensitivity to change of three algofunctional scales for neck pain.

Methods. - Observational, prospective study. Patients with neck disorders were included. Pain and patients' perceived handicap assessed on visual analogue scales (VAS Pain, VAS Handicap), and functional disability measures (Neck Disability Index, Neck Pain and Disability Scale, Northwick Park Neck Pain Questionnaire) were recorded twice, at baseline and at an 11-month follow-up assessment. Sensitivity to change was assessed using the effect size (ES) and the standardised response mean (SRM), and the non-parametric Spearman's rank correlation coefficient (r) was used to assess the correlation between quantitative variable changes and patients' overall opinion. Analysis of variance (ANOVA) followed by a Tukey-test was performed to determine if the scales distinguished improved, stable, and deteriorated patients.

Results. - Seventy-one patients (43 women, mean age 49 years) were included and evaluated twice at an interval of 11 ± 2 months. The three scales showed good sensitivity to change. The ANOVA showed a group effect, and individual changes in the scales scores were statistically different in two-by-two comparisons (improved, stable or deteriorated patients). Changes in NPDS scores had the highest correlation with patient's overall assessment (r = 0.592).

Conclusion. - The three scales can detect changes in patients with neck disorders. Changes in NPDS score had the best correlation with patients' overall opinion concerning their neck disorder and this questionnaire should be given preference in clinical trials.

Mots clés  : Sensitivity to change ; Disability ; Pain ; Neck.

© 2003  Elsevier SAS. All Rights Reserved.

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