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Reliability & validity of the LIBRE Profile.

Emily C Dore1, Molly Marino1, Pengsheng Ni1

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Summary
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The Life Impact Burn Recovery Evaluation (LIBRE) Profile demonstrates strong reliability and validity for assessing social participation in burn survivors. This tool offers a comprehensive measure of social functioning post-burn injury.

Keywords:
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Area of Science:

  • Rehabilitation Medicine
  • Psychometrics
  • Burn Injury Research

Background:

  • The Life Impact Burn Recovery Evaluation (LIBRE) Profile was developed using Item Response Theory to measure social participation after burn injury.
  • It assesses six key domains: Family & Friends, Social Interactions, Social Activities, Work & Employment, Romantic Relationships, and Sexual Relationships.
  • The LIBRE Profile can be administered via computerized adaptive testing or fixed short forms.

Purpose of the Study:

  • To evaluate the psychometric properties of the LIBRE Profile, specifically its reliability and validity.
  • To confirm the LIBRE Profile's utility as a measure of social participation in adult burn survivors.

Main Methods:

  • Examined validity by comparing LIBRE Profile scales with legacy measures assessing similar constructs, calculating Pearson correlations for convergent and divergent validity.
  • Assessed test-retest reliability by re-administering the LIBRE Profile scales to adult burn survivors 7–10 days after initial testing.
  • Calculated reliability metrics including repeatability coefficients, standard error of measurement (SEM), and minimal detectable change (MDC) to establish measurement error thresholds.

Main Results:

  • Reliability metrics showed repeatability coefficients ranging from 7.31 to 9.27 and SEMs from 2.62 to 3.39 across all six scales.
  • MDC values indicated that MDC90 ranged from 6.08 to 7.86 points and MDC95 ranged from 7.26 to 9.40 points.
  • All correlations between LIBRE Profile scales and legacy measures were statistically significant (p<0.05) in the predicted directions, supporting both convergent and divergent validity.

Conclusions:

  • This study provides robust evidence for the reliability and validity of the LIBRE Profile.
  • The LIBRE Profile is confirmed as a valuable tool for exclusively measuring social participation following burn injury.
  • It represents a significant advancement in assessing the psychosocial impact of burn recovery.