From May 29-June 10, 2020 the Tufts University Priority Area Research Group on Equity in Health, Wealth, and Civic Engagement contracted with Ipsos to conduct a survey of 1,267 Americans. The target population consisted of non-institutionalized adults age 18 and older residing in the United States.
Ipsos uses address-based probability sampling to create a nationally representative online panel of respondents who take regular surveys. Individuals are provided with Internet access if they need it. Ipsos invited one adult from a representative sample of households to participate in this survey. The survey was fielded in English and Spanish.
For analytic purposes, the survey sample has been weighted to match the national adult population’s gender, age, race/ethnicity, education, Census region, income, homeownership, and urbanicity from the 2019 Current Population Supplement. Weights ranged from 0.174 to 3.7 with a median of 0.843.
The Tufts team designed our own survey using items that we wrote or selected from Ipsos. In addition, we purchased approximately 350 variables for each respondent that Ipsos had collected in previous surveys, producing a large database. We will also be importing environmental variables such as access to parks or whether they experienced heat-waves in 2019, based on respondent’s ZIP code and age.