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Biomechanical Changes Related to Low Back Pain: An Innovative Tool for Movement Pattern Assessment and Treatment Evaluation in Rehabilitation

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Simplified functioning assessment for low back pain: ICF-based item response theory modelling.

John M Gikaro¹, Zi-Yan Zhu¹, Hui-Hui Shan¹

¹School of Rehabilitation Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.

European Journal of Physical and Rehabilitation Medicine

|January 12, 2024

Summary

This summary is machine-generated.

Researchers developed a concise 28-category International Classification of Functioning, Disability and Health (ICF) core set for low back pain (LBP) using item response theory (IRT). This validated tool aids in individualized assessment and rehabilitation planning for LBP patients.

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Area of Science:

Rehabilitation Medicine
Psychometrics
Health Sciences

Background:

Limited research exists on applying Item Response Theory (IRT) to International Classification of Functioning, Disability and Health (ICF)-based tools for low back pain (LBP).
Assessing person abilities and functioning difficulties in LBP screening tools requires robust psychometric approaches.

Purpose of the Study:

To develop and validate a parsimonious core set of ICF (PCSI) specifically for LBP.
To utilize IRT modeling for creating an efficient and reliable assessment tool for LBP.

Main Methods:

A cross-sectional study involving 306 LBP patients across nine hospitals in China.
Data from the comprehensive ICF Core Set for LBP (78 items) were dichotomized and analyzed using Mokken Scale analysis and parametric IRT.
A three-parameter logistic IRT model was constructed.

Main Results:

A 28-category PCSI for LBP was developed, comprising 8 body function, 18 activity/participation, and 2 body structure items.
The model demonstrated excellent internal consistency (Cronbach's alpha = 0.927, LCRC = 0.955).
The PCSI showed significant correlations with established measures like the Oswestry Disability Index, Roland-Morris Disability Questionnaire, and SF-12 PCS/MCS, confirming construct validity.

Conclusions:

The 28-category PCSI for LBP exhibits good construct validity and internal consistency, serving as a practical tool for assessing functioning in LBP patients.
IRT modeling facilitated the creation of a simplified functioning assessment model, providing a basis for personalized rehabilitation plans in clinical practice and research.