A study of the test-retest reliability of the self-perceived general recovery and self-perceived change in neck pain questions in patients with recent whiplash-associated disorders

Eur Spine J. 2010 Jun;19(6):957-62. doi: 10.1007/s00586-010-1289-x. Epub 2010 Feb 4.

Abstract

The objectives of this study were to determine the test-retest reliability of two self-perceived recovery questions in patients with recent whiplash-associated disorders (WAD), and to assess whether remembering previous answers influences reliability. The self-perceived general recovery and self-perceived change in neck pain questions were administered to 46 patients with recent WAD 6 weeks after recruitment and again 3-5 days later. At follow-up, we also asked participants if they remembered their previous answers. We used the intra-class correlation coefficients (ICC) to measure the reliability of the original ordinal response structure and kappa statistics for dichotomized responses. The ICC [95% confidence intervals (CI)] for the general recovery and for the change in neck pain questions were 0.70 (0.60-0.80) and 0.80 (0.72-0.87), respectively. The kappa statistic (95% CI) for the general recovery question was 0.81 (0.64-0.99) when recovery was defined as "completely better" or "much improved". The kappa statistic (95% CI) for the change in neck pain question was 0.80 (0.62-0.99) when recovery was defined as "very much better" or "better". Our analysis suggests that the test-retest reliability may be higher for participants who remembered their previous responses. In conclusion, our results suggest that self-perceived recovery questions have adequate reliability for use in epidemiological research of WAD.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Attitude to Health
  • Female
  • Humans
  • Male
  • Middle Aged
  • Neck Pain / epidemiology*
  • Neck Pain / psychology*
  • Neck Pain / therapy
  • Neuropsychological Tests / statistics & numerical data*
  • Outcome Assessment, Health Care / methods
  • Pain Measurement / methods
  • Patient Satisfaction
  • Predictive Value of Tests
  • Recovery of Function / physiology
  • Reproducibility of Results
  • Self-Assessment*
  • Whiplash Injuries / epidemiology*
  • Whiplash Injuries / psychology*
  • Whiplash Injuries / therapy
  • Young Adult