Costs: 1. Direct costs of psychiatric hospital care (skewed data)
Study	Intervention	Mean	SD	Total	Note
by medium term
Harrison‐Read‐UK 2000	1. ICM*	501	967.4	97
Harrison‐Read‐UK 2000	2. Low ICM*	527	753	96	* Unit cost £, fiscal year 1995/6. ** 'No significant difference between groups. Statistical analysis on non‐parametric data were performed using bootstrap methods'. ***Time period: 12 months.
by long term
Harrison‐Read‐UK 2000	1. ICM*	414	777.8	97
Harrison‐Read‐UK 2000	2. Low ICM*	478	890	96	* Unit cost £, fiscal year 1995/6. ** 'No significant difference between groups. Statistical analysis on non‐parametric data were performed using bootstrap methods'. ***Time period: 12 months.
Quinlivan‐California 1995	1. ICM*	301	396.6	30
Quinlivan‐California 1995	2. Low ICM*	959	1,572.7	30	* Unit cost US $, fiscal year not reported, but study was carried on from April 1990 to March 1992. ** 'Costs significantly lower for the ICM group (F=4.32, df=2.87, p=0.02.)' ***Time period: 24 months