Rasch-Transformed Total Neuropathy Score clinical version (RT-TNSc©) in patients with chemotherapy-induced peripheral neuropathy

Davide Binda, Guido Cavaletti, David R. Cornblath, Ingemar S.J. Merkies

Research output: Contribution to journalArticlepeer-review

Abstract

Composite scales such as the Total Neuropathy Score clinical version (TNSc©) have been widely used to measure neurological impairment in a standardized manner but they have been criticized due to their ordinal setting having no fixed unit. This study aims to improve impairment assessment in patients with chemotherapy-induced peripheral neuropathy (CIPN) by subjecting TNSc© records to Rasch analyses. In particular, we wanted to investigate the influence of factors affecting the use of the TNSc© in clinical practice. TNSc© has 7 domains (sensory, motor, autonomic, pin-prick, vibration, strength, and deep tendon reflexes [DTR]) each being scored 0-4. Data obtained in 281 patients with stable CIPN were subjected to Rasch analyses to determine the fit to the model. The TNSc© did not meet Rasch model's expectations primarily because of misfit statistics in autonomic and DTR domains. Removing these two, acceptable model fit and uni-dimensionality were obtained. However, disordered thresholds (vibration and strength) and item bias (mainly cultural) were still seen, but these findings were kept to balance the assessment range of the Rasch-Transformed TNSc© (RT-TNSc©). Acceptable reliability findings were also obtained. A 5-domains RT-TNSc© may be a more proper assessment tool in patients with CIPN. Future studies are needed to examine its responsive properties.

Original languageEnglish (US)
Pages (from-to)328-332
Number of pages5
JournalJournal of the Peripheral Nervous System
Volume20
Issue number3
DOIs
StatePublished - Sep 1 2015

Keywords

  • Rasch analysis
  • chemotherapy
  • peripheral neuropathy
  • psychometrics
  • total neuropathy score

ASJC Scopus subject areas

  • Neuroscience(all)
  • Clinical Neurology

Fingerprint

Dive into the research topics of 'Rasch-Transformed Total Neuropathy Score clinical version (RT-TNSc<sup>©</sup>) in patients with chemotherapy-induced peripheral neuropathy'. Together they form a unique fingerprint.

Cite this