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. Author manuscript; available in PMC: 2009 Jun 17.
Published in final edited form as: Addiction. 2008 Apr;103(4):638–648. doi: 10.1111/j.1360-0443.2008.02137.x

Table 3.

Means and Standard Deviations of Two Variables Central to Efficacy of Contingency Management: Treatment Retention and Continuous Abstinence. (N=240)

Variable Treatment Condition
F Treatment (df=3,236)
CaseM MET/CB ContM MET/CB/ContM
M M M M
(SD) (SD) (SD) (SD)
Treatment Sessions 4.7 4.9 5.5 5.6 1.06
Attended (3.5) (3.3) (3.8) (3.6)
Days Continuous 17.27 19.25 28.23 25.80 1.82
Abstinence (25.88) (27.24) (30.41) (31.97)
During Treatment a,b
a

Note. Linear contrast CaseM < MET/CB < ContM < MET/CB/ContM, p < .05.

b

Contrast of ContM conditions v. non-ContM Conditions, p < .05 .