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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: J Subst Abuse Treat. 2011 Feb 11;41(1):97–103. doi: 10.1016/j.jsat.2011.01.012

Table 2.

Therapist intention to achieve target threshold

Bivariate Models
Multivariate Model
B SE t-ratio df p-value Percent Variance Explained B SE t-ratio df p-value
Condition Assignment
    Assigned to P4P condition 1.31 .30 4.35 27 <.001 18% 1.11 .31 3.59 27 .002
Theory of Planned Behavior
    Attitude .40 .13 2.97 88 .004 9% .22 .14 1.59 86 .115
    Subjective Norms .23 .10 2.26 88 .026 5% .17 .10 1.66 86 .100
    Control .01 .11 0.08 88 .939 0%
Percent Variance Explained = 22%

Note: All analyses were conducted using HLM software. Assigned to P4P condition was modeled at the site-level (level 2) while the theory of planned behavior measures were modeled at the therapist-level (level 1).