Reliability of novice raters in using the movement system impairment approach to classify people with low back pain.
Observational cross sectional study. To examine the inter-rater reliability of novice raters in using the Movement System Impairment (MSI) approach system and to explore the patterns of disagreement in classification errors. The inter-rater reliability of individual tests items used in the MSI approach is moderate to good; however, the reliability of the classification algorithm has been tested only preliminarily. Using previously recorded patient data (n = 21), 13 novice raters classified patients according to the MSI schema. The overall percent agreement using the kappa statistic as well as the agreement/disagreement among pair-wise comparisons in classification assignments were examined. There was an overall 87.4% agreement in the pairs of classification judgments with a kappa coefficient of 0.81 (95% CI: 0.79, 0.83). Raters were most likely to agree on the classification of Flexion (100%) and least likely to agree on the classification of Rotation (84%). The MSI classification algorithm can be learned by novice users and with training, their inter-rater reliability in applying the algorithm for classification judgments is good and similar to that reported in other studies. However, some degree of error persists in the classification decision-making associated with the MSI system, in particular for the Rotation category.
Department of Rehabilitation Science, 305 Rowell Building, University of Vermont, Burlington, VT 05401, USA. Sharon.Henry@uvm.edu
Sharon M
SM
Henry
Linda R
LR
Van Dillen
Andrea R
AR
Trombley
Justine M
JM
Dee
Janice Y
JY
Bunn
D000328:Adult; D000465:Algorithms; D002983:Clinical Competence; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D017116:Low Back Pain / Q000145:classification*; D008297:Male; D059825:Physical Therapists; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires