Table 1.

Undiscounted per capita direct medical costs of the DPP/DPPOS interventions by intervention group and study year ($)

Year	Lifestyle	Metformin	Placebo	DPP Group Lifestylea
1-DPP	1,826	584	87	898
2-DPP	887	294	50	563
3-DPP	915	299	47	590
4 (Bridge)	173	301	220	173
5-DPPOS	126	138	62	126
6-DPPOS	112	136	61	112
7-DPPOS	139	137	59	139
8-DPPOS	138	132	55	138
9-DPPOS	126	131	55	126
10-DPPOS	130	130	55	130
Total	4,572	2,281	752	2,995

^aSensitivity analysis. Assumes that the core curriculum and follow-up visits were conducted as group sessions with ten participants during the 3 years of DPP