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. Author manuscript; available in PMC: 2009 Sep 15.
Published in final edited form as: J Ment Health Policy Econ. 2008 Mar;11(1):27–32.

Table 2.

Mean length of stay and associated costs of treatment, by study condition, in randomized arm. Significanta differences (p<.05) are bolded.

Day Hospital Residential significant differences for study condition significant differences for study condition
$575 per week (range $523 - $633) $370 per week (range $289 - $475) Length of stay Costs
Length of stay Days (SE) Per episode cost $ Length of stay days (SE) Per episode cost $ F-statistica p-value F-statistica p-value
Overall results (n=292) 10.9 (.70) $905 22.5 (1.79) $1166 36.47 <.001 5.12 .025
Results by Gender
 Females (n = 110) 11.0 (1.18) $909 19.1 (2.84) $1154 6.94 .011 1.54 .219
 Males (n = 182) 10.8 (.86) $903 24.4 (2.28) $1173 30.94 <.001 3.59 .060
Results by Ethnicity
Whites (n = 157) 13.1 (.95) $1088 21.0 (2.20) $1050 10.83 .001 .070 .792
Non-Whites (n = 135) 8.5 (.96) $705 24.5 (2.95) $1311 25.39 .001 10.78 .001

Note: All data and calculations were performed with the Drug Abuse Treatment Cost Analysis Program (DATCAP; www.DATCAP.com). Average episode cost = (average weekly program cost) X (client’s length of stay) / number of clients in the treatment condition (day hospital or residential treatment).

a

Significance based on the F-statistic for the Brown-Forsythe Robust Test of Equality of Means.