Reliability, validity and responsiveness of the cross-culturally adapted Italian version of the core outcome measures index (COMI) for the neck

Marco Monticone, Simona Ferrante, Serena Maggioni, Gisel Grenat, Giovanni A. Checchia, Marco Testa, Marco G. Teli, Anne F. Mannion

Research output: Contribution to journalArticle

Abstract

Purpose: Evaluation of the psychometric properties of a cross-culturally adapted questionnaire, the Core Outcome Measurement Index for neck pain (COMI-neck). Methods: The COMI-neck was cross-culturally adapted for the Italian language using established procedures. The following psychometric properties of the instrument were then assessed in patients with chronic neck pain undergoing rehabilitation: test-retest reliability (intraclass correlation coefficient, ICC); construct validity by comparing COMI-neck with the Neck Pain and Disability Scale, a numerical pain rating scale, and the EuroQol-Five Dimension (Pearson's correlations); and responsiveness by means of Standardized Response Mean (SRM), unpaired t tests, and Receiver Operating Characteristics (ROC) curves. Results: The questionnaire was completed by 103 subjects. The COMI-neck summary score displayed no relevant floor or ceiling effects. Test-retest reliability was excellent (ICC = 0.87). With one exception (symptom-specific well-being), the individual COMI items and the COMI summary score correlated to the expected extent with the scores of the reference questionnaires (r = 0.40-0.80). The mean change scores for the Italian COMI-neck differed significantly between patients with a good global outcome and those with a poor outcome (p = 0.002); SRM for the good outcome group was 1.23, and for the poor outcome group 0.40. ROC analysis revealed an area under the curve of 0.73 (95 % CI: 0.62-0.85). Conclusions: This study provides evidence that the Italian version of the COMI-neck is a valid and responsive questionnaire in the population of patients examined. Its use is recommended for clinical and research purposes.

Original languageEnglish
Pages (from-to)863-872
Number of pages10
JournalEuropean Spine Journal
Volume23
Issue number4
DOIs
Publication statusPublished - 2014

Keywords

  • Chronic neck pain
  • COMI-neck
  • Outcome
  • Rehabilitation

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine
  • Medicine(all)

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    Monticone, M., Ferrante, S., Maggioni, S., Grenat, G., Checchia, G. A., Testa, M., Teli, M. G., & Mannion, A. F. (2014). Reliability, validity and responsiveness of the cross-culturally adapted Italian version of the core outcome measures index (COMI) for the neck. European Spine Journal, 23(4), 863-872. https://doi.org/10.1007/s00586-013-3092-y