Perceived functional ability assessed with the spinal function sort: is it valid for European rehabilitation settings in patients with non-specific non-acute low back pain?

Abstract

The aim of this study involving 170 patients suffering from non-specific low back pain was to test the validity of the spinal function sort (SFS) in a European rehabilitation setting. The SFS, a picture-based questionnaire, assesses perceived functional ability of work tasks involving the spine. All measurements were taken by a blinded research assistant; work status was assessed with questionnaires. Our study demonstrated a high internal consistency shown by a Cronbach's alpha of 0.98, reasonable evidence for unidimensionality, spearman correlations of [0.6 with work activities, and discriminating power for work status at 3 and 12 months by ROC curve analysis (area under curve = 0.760 (95% CI 0.689-0.822), respectively, 0.801 (95% CI 0.731-0.859). The standardised response mean within the two treatment groups was 0.18 and -0.31. As a result, we conclude that the perceived functional ability for work tasks can be validly assessed with the SFS in a European rehabilitation setting in patients with non-specific low back pain, and is predictive for future work status.

Is the Zumba fitness responsible for low back pain?

“…• The SF-36 questionnaire is a self-administered questionnaire containing eight multi-items: each scale goes from 0 (worst health) to 100 (best health) [12]. • The Spinal Functional Sort (SFS) quantifies ability to perform work tasks that involve the spine and lower extremities [13]. The subject saw 100 photos relative to daily activities.…”

Development and Validation of a Pain Behavior Assessment in Patients with Chronic Low Back Pain

“…Therapists' comments resulted in an adapted 52-items version, including four new items: denial, discrepancy balance test, discrepancy overhead work and coefficient of variance. The item SFS was adapted according to a recent study on the SFS [20]. All items generated are presented in ''Appendix''.…”

“…The criteria for rating pain behavior ''yes/no'' were defined by numeric cutoff levels (where applicable), evaluated in previous studies [15,19,20,[32][33][34][35]. Sensitivity and specificity values for these cutoff levels were between 0.55 to 1.0 and 0.87 to 0.97, respectively.…”

“…Examples of such assessments are the Spinal Function Sort (SFS) [20], grip strength [14] or the nonorganic somatic components by Waddell [17,21,22].…”

Entwicklung einer Kurzversion des Spinal Function Sort (M-SFS): Ein Mixed-Method-Ansatz ,

“…Erreichbar ist ein maximaler Wert von 200 Punkten erreicht. Der in verschiedene Sprachen übersetzte und validierte SFS wird in mehreren Ländern verwendet [5,14,24,27]. In Arbeitsrehabilitationsprogrammen im Zusammenhang mit der Evaluation der funktionellen Leistungsfähigkeit (EFL) dient er dazu, die arbeitsbezogene Selbstwirksamkeit mit der beobachteten funktionellen Leistungsfähigkeit zu vergleichen [20,24,28].…”