Reliability and factor structure of the Short Problem Behaviors Assessment for Huntington's disease (PBA-s) in the TRACK-HD and REGISTRY studies

J Neuropsychiatry Clin Neurosci. Winter 2015;27(1):59-64. doi: 10.1176/appi.neuropsych.13070169.

Abstract

The authors report the inter-rater reliability and factor structure of the Short Problem Behaviors Assessment (PBA-s), a semistructured interview to measure severity and frequency of behavioral problems in Huntington's disease. Video recordings of 410 PBA-s interviews were rescored by an independent rater, and Cohen's kappa calculated to assess inter-rater reliability. The mean kappa was 0.74 for severity and 0.76 for frequency scores, whereas weighted kappa (allowing scores to differ by 1 point) was 0.94 for severity and 0.92 for frequency scores. The results of factor analysis were consistent with previous studies using other measures. The authors conclude that the PBA-s is a reliable measure.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Europe
  • Female
  • Humans
  • Huntington Disease / complications*
  • International Cooperation
  • Longitudinal Studies
  • Male
  • Mental Disorders / diagnosis*
  • Mental Disorders / etiology*
  • Psychiatric Status Rating Scales*
  • Registries
  • Reproducibility of Results
  • Severity of Illness Index
  • Statistics, Nonparametric
  • Video Recording