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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: J Subst Abuse Treat. 2018 Jan 31;87:42–49. doi: 10.1016/j.jsat.2018.01.013

Table 3.

Cost-Effectiveness Analysis Results ($2016)

Any Treatment Initiation (2 months) Any Treatment Initiation (6 months)
Treatment Mean
Cost (C)		 Mean
Effectiveness
(E)		 ICER
(ΔC/ΔE)		 Mean Cost
(C)		 Mean
Effectiveness
(E)		 ICER
(ΔC/ΔE)
SAU $— (—) 10.7% (0.03) $— (—) 25.0% (0.04)
MAPIT $79.54 ($0.14) 20.2% (0.04) $8.37 $79.37 ($0.12) 37.2% (0.05) $6.70
MI $133.16 ($0.12) 18.6% (0.04) Strictly dominated $134.27 ($0.10) 28.6% (0.05) Strictly dominated

Note: Treatments are ranked in ascending order according to cost. ICER—Incremental Cost Effectiveness Ratio, MAPIT— Motivational Assessment Program to Initiate Treatment, MI— Motivational Interviewing, SAU—services as usual. The Δ compares one row of the table to the previous row, adjusting for covariates. For the current study, strictly dominated means that one intervention was both more effective and less expensive than the alternative.