Table 2.

Health Care Costs, by Diabetes Status, Before and After Participation in the TRICARE Diabetes Disease Management Program, United States, 2007-2008^a

Cost Category/ Diabetes Statusb	Period	Historical Control Group (HCG),c n = 23,778		Program Participants, n = 29,604		Difference Between HCG and Participants
		Mean Per-Person Annual Cost,d $	Pre-Post Change, %	Mean Per-Person Annual Cost,d $	Pre-Post Change, %	$	%
Diabetes costs
Controlled	Pre	3,720	−27.8	3,568	−34.6	−200	−6.8
	Post	2,687		2,335
Uncontrolled	Pre	6,822	−27.4	6,627	−34.7	−427	−7.3
	Post	4,950		4,328
All	Pre	5,215	−27.6	5,169	−34.6	−353	−7.1
	Post	3,777		3,378
Total costs
Controlled	Pre	11,239	−14.4	11,307	−19.3	−564	−4.9
	Post	9,620		9,124
Uncontrolled	Pre	17,751	−19.4	16,957	−21.0	−120	−1.6
	Post	14,308		13,394
All	Pre	14,376	−17.4	14,264	−20.4	−408	−3.0
	Post	11,879		11,359

^a Unadjusted for case mix.

^b Controlled defined as not having an episode of care with the International Classification of Diseases, Ninth Revision, diagnosis code for uncontrolled diabetes (250.02, 250.03) during the year preceding program eligibility. Uncontrolled defined as having at least 1 such episode.

^c Refers to patients who in October 2004 met the criteria used later to determine eligibility for the diabetes disease management program established in June 2007.

^d Adjusted to the medical component of the Consumer Price Index in 2008 (10).