Table.

Types of Coverage Offered by and Enrollments of Health Insurance Plans (N = 35), Survey on Cardiometabolic Risk-Control Services, United States, January 2008

Type of Coverage	No. of Health Plans (%)	No. of Enrolled Participants
HMO	20 (57.1)	20,034,695
PPO	8 (22.9)	24,008,055
POS	2 (5.7)	28,500
HMO, POS, and PPO	2 (5.7)	1,179,434
HMO and POS	2 (5.7)	385,000
HMO and PPO	1 (2.9)	1,566,154

Abbreviations: HMO, health maintenance organization; PPO, preferred provider organization; POS, point-of-service plan