Table 1 Characteristics of map-based surveys applied during COVID-19 spring 2020.
City | Copenhagen | Stockholm | Helsinki | Turku |
|---|---|---|---|---|
Data collection time | 15.5–15.7 2020 (9 weeks) | 27.4–15.6.2020 (7 weeks) | 7.5.–31.5.2020 (4 weeks) | 11.5.–21.6.2020 (6 weeks) |
Sampling approach | Five local citizen panels relating to local district councils (volunteered recruitment) | Convenience sampling | A simple random sample of 10,000 inhabitants | Convenience sampling |
Targeted respondents | Inhabitants above 19 in the five local districts | People 15 or older with reading competence in Swedish | Working-age adults (18–65 years) living permanently in the study area (Helsinki metropolitan area consisting of the municipalities of Helsinki, Espoo, Vantaa, and Kauniainen) | Turku inhabitants above 15 years old |
Survey respondents total/% of population | 4992/1.8% (of local district population) Avg. response rate across panels = 27% | 593/0.02% | 469/0.04% | 730/0.4% |
