Reliability and validity of a treatment fidelity assessment for motivational interviewing targeting sexual risk behaviors in people living with HIV/AIDS

Elizabeth K. Seng, Travis I. Lovejoy

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

This study psychometrically evaluates the Motivational Interviewing Treatment Integrity Code (MITI) to assess fidelity to motivational interviewing to reduce sexual risk behaviors in people living with HIV/AIDS. 74 sessions from a pilot randomized controlled trial of motivational interviewing to reduce sexual risk behaviors in people living with HIV were coded with the MITI. Participants reported sexual behavior at baseline, 3-month, and 6-months. Regarding reliability, excellent inter-rater reliability was achieved for measures of behavior frequency across the 12 sessions coded by both coders; global scales demonstrated poor intraclass correlations, but adequate percent agreement. Regarding validity, principle components analyses indicated that a two-factor model accounted for an adequate amount of variance in the data. These factors were associated with decreases in sexual risk behaviors after treatment. The MITI is a reliable and valid measurement of treatment fidelity for motivational interviewing targeting sexual risk behaviors in people living with HIV/AIDS.

Original languageEnglish (US)
Pages (from-to)440-448
Number of pages9
JournalJournal of Clinical Psychology in Medical Settings
Volume20
Issue number4
DOIs
StatePublished - Dec 1 2013

Keywords

  • HIV/AIDS
  • Motivational interviewing
  • Psychometrics
  • Sexual risk behaviors
  • Treatment fidelity

ASJC Scopus subject areas

  • Clinical Psychology

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