Routine measurement in low back pain; towards a pragmatic patient-reported productivity cost outcome measurement using the institute for medical technology assessment productivity cost questionnaire
Year: 2025
Type: article
Abstract: PURPOSE: The iMTA productivity cost questionnaire (iPCQ) has been recommended as a measurement tool for productivity cost, however, its use in routine care is hindered by the length of this questionnaire (18 questions). This study developed and tested a short-form (SF-) iPCQ. METHOD: A secondary analysis of the Groningen Spine Cohort's baseline data from patients with low back pain referred for tertiary care was performed. Six SFs were evaluated against the comprehensive iPCQ. Spearman correlation (r), intraclass correlation coefficient (ICC, agreement), standard error of measurement (SEM), and Bland-Altman's plot tested the congruence of the SFs with the comprehensive iPCQ. RESULTS: The sample consisted of 1220 patients with low back pain. The SF version with the highest correlation (SF-3; 7 items) with the comprehensive iPCQ had r = 0.99, ICC = 0.99, SEM = 295, while the SF with the least number of items (SF-6; 5 items) had r = 0.84, ICC = 0.91, SEM = 2063. The mean productivity cost estimates of SF-3 and SF-6 were €3414 (95% CI: 3036-3791) and €3333 (95% CI: 2970-3696) respectively while that for the comprehensive iPCQ amounted to €3456 (95% CI: 3189-3720). CONCLUSION: A SF with seven questions was developed with a high agreement with the comprehensive iPCQ. Initial clinimetric testing was satisfactory. Further assessment is recommended.
Institutions: University of Groningen, University Medical Center Groningen
Language: English
Subfield: Pharmacology
Field: Medicine
Domain: Health Sciences
Open Access status: hybrid
Estimated APC paid: $4,790
OpenAlex ID: W4407776377