Crosswalking 4 Pain Impact Measures in a Nationally Representative Sample of Adults With Back Pain.
Graham T DiGuiseppi, Maria Orlando Edelen, Anthony Rodriguez and 5 others
PMID 39341440WHAT IT FOUND
Equations and tables allow researchers to convert scores between four common back pain measures.
The Oswestry Disability Index and PEG translate well to the Impact Stratification Score. The Roland-Morris Disability Questionnaire translates less accurately.
Key findings
01The Impact Stratification Score showed the strongest correlations with the PEG and the Oswestry Disability Index.
02Crosswalks between the Roland-Morris Disability Questionnaire and the PEG accounted for the lowest amount of variance and had the greatest error.
03Item-Response Theory based predictions between the PEG and the Impact Stratification Score, and between the Oswestry Disability Index and the Impact Stratification Score, had the lowest amount of error of all crosswalks generated.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
The study used a general population sample of adults reporting back pain, not a clinical sample of patients seeking treatment, so results may not generalize to patients in therapy. The validation sample was drawn from the same panel as the development sample, which may limit how well the conversion equations perform in other diverse groups. Conversion accuracy varied by age, race, and gender, meaning the equations may be less reliable for some demographic groups.
Declared interests
The authors have no conflict of interest to disclose.
The easy way to misread this
Do not assume these conversion equations are equally accurate for all four measures or all patient groups. The Roland-Morris Disability Questionnaire translated poorly to the PEG, and accuracy was lower for older adults, females, and non-White/Hispanic individuals.