Table 3.

Three-Year Incidence and Prevalence of Metabolic Syndrome Components among Diabetes Prevention Program Participants by Treatment Group^*

Metabolic Syndrome Component	Cumulative Incidence among Participants Not Meeting Criterion at Baseline, % (n)			Prevalence among Participants Meeting Criterion at Baseline, % (n)
	Placebo Group	Metformin Group	Lifestyle Group	Placebo Group	Metformin Group	Lifestyle Group
Waist circumference	33 (241)	15 (222)^†	8 (236)^†	93 (515)	89 (492)^†	81 (492)^‡
Low HDL cholesterol level	70 (429)	67 (490)	68 (477)	87 (398)	79 (333)^‡	78 (377)^‡
High triglyceride level	27 (555)	30 (601)	18 (601)^†	73 (305)	72 (289)	60 (286)^†
High fasting plasma glucose level	40 (726)	29 (714)^†	28 (734)^†	74 (221)	60 (210)^†	55 (210)^†
High blood pressure	41 (613)	44 (571)	35 (590)^†	81 (297)	80 (307)	68 (262)^†

Numbers in parentheses are numbers at baseline. HDL = high-density lipoprotein.

^†

P < 0.001 versus placebo.

^‡

P < 0.05 versus placebo.