Background: Population-based surveys (self-report) and health insurance administrative data (Healthcare Effectiveness Data and Information Set [HEDIS]) are used to estimate chlamydia screening coverage in the United States. Estimates from these methods differ, but few studies have compared these 2 indices in the same population.
Methods: In 2010, we surveyed a random sample of women aged 18 to 25 years enrolled in a Washington State-managed care organization.