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The Self-Injury Trauma (SIT) Scale: a method for quantifying surface tissue damage caused by self-injurious behavior.

B A Iwata1, G M Pace, R C Kissel

  • 1Psychology Department, University of Florida, Gainesville 32611.

Journal of Applied Behavior Analysis
|January 1, 1990
PubMed
Summary

This study introduces the Self-Injury Trauma Scale to classify and quantify surface tissue damage from self-injurious behavior. The scale demonstrates high interrater reliability, aiding in consistent assessment of injury characteristics.

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Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Forensic Psychology

Background:

  • Self-injurious behavior (SIB) presents a significant clinical challenge.
  • Accurate classification and quantification of SIB-related tissue damage are crucial for effective treatment and risk assessment.

Purpose of the Study:

  • To introduce and validate the Self-Injury Trauma Scale (SITS) for classifying and quantifying surface tissue damage resulting from SIB.
  • To assess the interrater reliability of the SITS in differentiating SIB based on injury characteristics.

Main Methods:

  • Development of the Self-Injury Trauma Scale (SITS) with specific criteria for topography, location, type, number, and severity of injuries.
  • Interrater reliability analysis conducted on 50 pairs of independently scored records using the SITS.

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  • Calculation of mean (median) percentage agreement for overall scoring and specific injury parameters.

    • Main Results:

    • High interrater reliability was achieved for the SITS, with overall agreement at 97% (98%).
    • Excellent agreement was observed for injury location (99%), type (96%), and severity (94%).
    • Reliability for number of injuries was 89%, and summary scores (Number Index, Severity Index, Estimate of Current Risk) showed high agreement (90-100%).

    Conclusions:

    • The Self-Injury Trauma Scale (SITS) is a reliable tool for classifying and quantifying surface tissue damage from self-injurious behavior.
    • The scale's high interrater reliability supports its utility in clinical and research settings for consistent SIB assessment.
    • The SITS facilitates differentiation of SIB based on objective injury characteristics, informing treatment and risk management strategies.