Table 1 Sociodemographic characteristics of participants taking part in the three survey rounds in the nine cities compared with the state population distribution
From: Population-based surveys of antibodies against SARS-CoV-2 in Southern Brazil
Round 1 | Round 2 | Round 3 | State populationa | |
|---|---|---|---|---|
Sex (%) | ||||
Male | 41.7 | 40.6 | 41.1 | 48.7 |
Female | 58.3 | 59.4 | 58.9 | 51.3 |
Age (years) | ||||
0–9 | 3.6 | 2.6 | 2.5 | 12.3 |
10–19 | 5.4 | 5.1 | 5.9 | 12.6 |
20–29 | 12.3 | 11.4 | 12.9 | 15.1 |
30–39 | 15.3 | 16.9 | 15.2 | 15.1 |
40–49 | 15.5 | 14.5 | 15.3 | 13.3 |
50–59 | 17.7 | 17.9 | 17.1 | 12.9 |
60–69 | 16.5 | 17.8 | 16.3 | 10.2 |
70–79 | 9.3 | 10.3 | 10.3 | 5.7 |
80+ | 4.4 | 3.5 | 4.5 | 2.9 |
Skin color | ||||
White | 76.5 | 75.8 | 76.0 | 81.5 |
Brown | 15.8 | 16.2 | 15.3 | 13.0 |
Black | 6.6 | 6.7 | 7.4 | 5.2 |
Other | 1.1 | 1.3 | 1.3 | 0.3 |
Education | ||||
Primary or less | 40.9 | 34.2 | 36.1 | Not available |
Secondary | 32.8 | 31.9 | 31.5 | Not available |
University or higher | 26.3 | 33.9 | 32.4 | Not available |
Number | 4,151 | 4,460 | 4,500 | |
