This working paper presents methodological findings from the latest round of the Health Tracking Household Survey, which added a cell phone sample to the existing landline sample of random telephone numbers to increase the coverage of the U.S. population.

Reviews the sample and survey design characteristics for this multiyear study and includes figures detailing the 60 study sites, sample components, and weights for each survey. The study includes a household survey, physician survey, and insurer followback survey linked to the household survey.