The research was conducted online within the U.S. by The Harris Poll on behalf of Elevance Health among 5,009 adults age 18+. The survey was conducted March 3-21, 2022.
Data are weighted where necessary by age by gender, race/ethnicity, region, education, marital status, household size, household income, language proficiency for Hispanics, and propensity to be online to bring them in line with their actual proportions in the population.
Respondents for this survey were selected from among those who have agreed to participate in our surveys. The sampling precision of Harris online polls is measured by using a Bayesian credible interval. For this study, the sample data is accurate to within +/- 1.7 percentage points using a 95% confidence level. This credible interval will be wider among subsets of the surveyed population of interest.
All sample surveys and polls, whether or not they use probability sampling, are subject to other multiple sources of error which are most often not possible to quantify or estimate, including, but not limited to coverage error, error associated with nonresponse, error associated with question wording and response options, and post-survey weighting and adjustments.