Do consumer-directed health plans drive change in enrollees' health care behavior?

Using panel data from two surveys of employees at one large employer from 2004 and 2005, this paper examines consumer-directed health plans' (CDHPs') influence on the use of health-related information and health services. We compare enrollees in a high-deductible CDHP, a lower-deductible CDHP, and a preferred provider organization (PPO). Enrollees in the lower-deductible CDHP were more likely than enrollees in the other plans to start using information. Enrollees in the high-deductible CDHP were more likely than those in the PPO to start forgoing medical care to save money.