Country: United States
Survey Organization: Synovate
Field Dates: August–October 2007
Sample: Privately insured adults ages 21–64. The sample was randomly drawn from Synovate's online sample of more than 2 million Internet users who have agreed to participate in research surveys. The authors used a base sample of 2,182 to draw incidence rates for persons with account-based health plans and high-deductible health plans, and complemented the base sample with an additional random oversample of these two groups. More specifically, the oversamples were: 1) those with a high-deductible health plan and either an employer-funded HRA or an employer- and/or employee-funded HSA, and 2) those with a high-deductible health plan without an account but with deductibles that are generally high enough to meet the qualifying threshold to make tax-preferred contributions to such an account. High deductibles were defined as individual deductibles of at least $1,000 and family deductibles of at least $2,000
Sample Size: 4,217, which included 895 in high-deductible health plans with either an HSA or HRA (CDHPs), 1,404 in high-deductible health plans without accounts (HDHPs), and 1,918 in more comprehensive health plans.
Interview Method: Internet survey
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