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. Author manuscript; available in PMC: 2011 Mar 14.
Published in final edited form as: JAMA. 2001 Oct 10;286(14):1715–1723. doi: 10.1001/jama.286.14.1715

Table 4.

Distribution of Treatment Costs and Visits by Treatment Condition*

Average Cost Per Member-Month, Mean (95% CI), $
Average Visit Rate Per Member-Month, Mean (95% CI), No.
Integrated Care Independent Care P Value Integrated Care Independent Care P Value
Full Sample (n = 592)
Group therapy 179.42 (165.43-193.41) 172.09 (158.55-185.63) .46 11.70 (10.78-12.62) 11.23 (10.34-12.12) .47

Individual therapy 169.25 (154.78-183.70) 131.32 (117.33-145.31) <.001 1.04 (0.95-1.13) 0.88 (0.79-0.97) .01

Psychiatric therapy 35.72 (29.10-42.34) 34.58 (28.17-40.99) .81 0.22 (0.18-0.26) 0.21 (0.17-0.25) .68

Substance abuse 384.39 (354.97-413.81) 337.99 (309.55-366.43) .02 12.96 (11.96-13.96) 12.32 (11.35-13.29) .36

Medical treatment 44.48 (36.21-52.75) 44.82 (36.82-52.82) .95 0.24 (0.19-0.29) 0.28 (0.25-0.33) .08

All treatment 428.87 (397.63-460.11) 382.81 (352.59-413.03) .03 13.20 (12.20-14.20) 12.60 (11.63-13.57) .40

SAMC Subgroup (n = 341)
Group therapy 191.50 (173.23-209.77) 184.09 (166.02-202.16) .57 12.49 (11.30-13.68) 12.01 (10.83-13.19) .57

Individual therapy 182.19 (163.04-201.34) 138.66 (119.72-157.62) .002 1.12 (1.00-1.24) 0.92 (0.81-1.03) .01

Psychiatric therapy 41.46 (31.99-50.93) 49.82 (40.45-59.19) .22 0.27 (0.21-0.33) 0.30 (0.24-0.36) .44

Substance abuse 415.15 (376.05-454.25) 372.57 (333.88-411.26) .13 13.88 (12.57-15.19) 13.23 (11.94-14.52) .48

Medical treatment 55.66 (43.15-68.17) 55.38 (43.01-67.75) .97 0.29 (0.23-0.35) 0.36 (0.30-0.42) .14

All treatment 470.81 (429.65-511.97) 427.95 (385.24-470.66) .14 14.17 (12.86-15.48) 13.59 (12.30-14.88) .54
*

CI indicates confidence interval; SAMC, substance abuse–related medical condition. Individual therapy included counseling provided by licensed social workers or psychologists. Psychiatric therapy included sessions provided by psychiatrists.