Table 1 Sociodemographic characteristics and SARS-CoV-2 specific information of the CoCoS study collective (survey completed, n = 2,433) compared to the potential participants and the general adult Cologne population
General adult Cologne population | Potential participants | CoCoS study sample (survey completed) | ||||
|---|---|---|---|---|---|---|
Sample | ||||||
Participants (18 yrs. or older) | 913,009 | 100% | 6,000 | 100% | 2,433 | 40.55% |
Gendera | ||||||
Female | 470,577 | 51.54% | 3,086 | 51.44% | 1,312 | 53.93% |
Agea | ||||||
18–34 years (%) | 270,538 | 29,63% | 1,662 | 27.70% | 570 | 23.43% |
35–59 years old (%) | 388,678 | 42,57% | 2,640 | 44.01% | 1,125 | 46.24% |
60–74 years old (%) | 153,890 | 16,86% | 1,095 | 18.25% | 511 | 21.00% |
75 years or older (%) | 99,903 | 10,94% | 602 | 10.04% | 227 | 9.33% |
No. of household members | ||||||
Average | 913,009 | 1.88 | NA | NA | 1,906 | 2.32 |
1–2 | 438,859 | 77.68% | NA | NA | 1,302 | 68.31% |
3–4 | 106,314 | 18.82% | NA | NA | 535 | 28.07% |
5 or more | 19,800 | 3.50% | NA | NA | 69 | 3.62% |
Missing valuesb | - | - | - | - | 527 | 21.66% |
School education | ||||||
No school leaving certificate | 36,520 | 4.00% | NA | NA | 9 | 0.46% |
Secondary school diploma | 374,333 | 41.00% | NA | NA | 475 | 24.39% |
High school graduation | 502,155 | 55.00% | NA | NA | 1,463 | 75.14% |
Missing valuesb | - | - | - | - | 486 | 19.97% |
Employment status | ||||||
Student/apprenticeship | 122,849 | 13.46% | NA | NA | 178 | 8.90% |
Employed | 582,613 | 63.81% | NA | NA | 1,153 | 57.71% |
Self-employed | NA | NA | NA | NA | 226 | 11.31% |
Retired | NA | NA | NA | NA | 326 | 16.32% |
Unemployed | 45,225 | 4.60% | NA | NA | 49 | 2.45% |
Otherc | NA | NA | NA | NA | 66 | 3.30% |
Missing Valuesb | - | - | - | - | 435 | 17.88% |
Primary citizenshipa | ||||||
German | 727,503 | 79.68% | 5,039 | 84.00% | 2,290 | 94.12% |
Other than German | 185,506 | 20.32% | 960 | 16.00% | 143 | 5.87% |
Cumulative SARS-CoV-2 cases | ||||||
Start of the pandemic until June 18, 2021 | 46,195 | 5.06% | NA | NA | 84 | 3.45% [2.73%-4.18%] |
Vaccination rate until June 18, 2021 | ||||||
Vaccinated at least once | 604,692 | 66.23% | NA | NA | 1,591 | 79.95% |
Vaccinated twice | 351,674 | 38.52% | NA | NA | 672 | 33.77% |
Not vaccinated | 308,308 | 33.76% | NA | NA | 399 | 20.05% |
Missing Valuesb | NA | NA | NA | NA | 443 | 18.20% |