Evidence supporting IDDT and other adult EBPs

Evaluation of the California Implementation of the SAMHSA Integrated Dual Disorders Treatment Model in Eight Programs

Over a three and one half year period, eight sites in four California counties implemented one of SAMHSA’s evidence-based practices, Integrated Dual Disorders Treatment (IDDT).  The implementation was supported by a SAMHSA grant to the California Department of Mental Health, with the implementation and evaluation contracted to CIBHS. Six of the eight sites sustained implementation of the model, one to a very high degree of fidelity and three others to an adequate levelof fidelity. In two of the four counties, IDDT is being further disseminated.

Executive Summary

Complete Report

Appendices are listed in the Final Report and are available by request. Other resources for the IDDT model at CIBHS are a summary of the literature supporting the model, fidelity scale materials (below) and conference handouts.

IDDT Fidelity Scale

The California Fidelity Scale and General Organizational Index

Revised IDDT Fidelity Scale

Toolkit Fidelity Scale Items

Evidence Summaries for Evidence-Based Practices


CIBHS sponsored a review of the five adult evidence based practices promoted by SAMSA. They are:

Other EBPs for Adults