Psychometric update of the Functional Interference Estimate: a brief measure of pain functional interference

J Pain Symptom Manage. 2004 Oct;28(4):389-95. doi: 10.1016/j.jpainsymman.2004.01.011.


The Functional Interference Estimate (FIE) is a brief, 5-item self-report measure that assesses the degree to which pain interferes with daily functioning. While the FIE has demonstrated reliability and validity with a small normative sample, not much is known about its reliability and validity with a broad sample of individuals with pain. The current study presents FIE score means, variability estimates, reliability and validity data based on a large sample (n = 1,337) of primary care patients who report problematic pain. The FIE has excellent internal consistency and appears to have strong convergent validity with other well-established measures of function (e.g., SF-36 and Dartmouth COOP Charts). Because of its brevity and flexibility, the FIE may be a useful self-report measure of pain functional interference in clinical research on pain.

Publication types

  • Clinical Trial
  • Comparative Study
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Activities of Daily Living*
  • Educational Status
  • Employment
  • Female
  • Humans
  • Male
  • Middle Aged
  • Pain / diagnosis*
  • Pain / epidemiology*
  • Pain Measurement / methods*
  • Pain Measurement / standards*
  • Psychometrics / methods
  • Psychometrics / standards
  • Reproducibility of Results
  • Risk Assessment / methods*
  • Risk Factors
  • Sensitivity and Specificity
  • United States / epidemiology