Table 1.
Distribution of model regions by Russian Federal District [17,18,19,22,23,24,25,26,27,28,29,30,31,32,33].
| Federal District(FD) | Number of Regions in the FD | Total number of Population Constituents |
Characteristics of the Surveyed Regions in the FD | Characteristics of the Surveyed Cohorts | ||||
|---|---|---|---|---|---|---|---|---|
| Number of Surveyed Regions in the FD | Population Size of Surveyed Areas, Persons | Also in % | Number of volunteers | Number of Seropositive Persons | Seroprevalence, % (95% Confidence Interval, CI) | |||
| FEFD | 11 | 8,124,053 | 3 | 3,960,816 | 48.8 | 8295 | 2384 | 28.7 (27.8–29.7) * |
| NCFD | 7 | 9,967,301 | 1 | 2,792,796 | 28.0 | 2683 | 262 | 9.8 (8.6–11.0) * |
| UFD | 6 | 12,329,500 | 3 | 9,276,273 | 752 | 8584 | 1589 | 18.5 (17.6–19.4) |
| NWFD | 11 | 13,941,959 | 4 | 9,028,541 | 64.8 | 11,899 | 3800 | 31.9 (30.9–32.9) * |
| SbFD | 10 | 17,003,927 | 3 | 8,016,756 | 47.1 | 8165 | 748 | 9.2 (8.3–9.7) * |
| SFD | 8 | 16,482,488 | 4 | 12,764,789 | 77.4 | 11,632 | 1633 | 14.0 (13.4–14.7) * |
| VFD | 14 | 29,070,827 | 3 | 9,465,793 | 32.6 | 8982 | 1695 | 18.9 (17.9–19.8) |
| CFD | 18 | 39,250,960 | 5 | 24,706,022 | 63.9 | 13,964 | 2164 | 15.7 (15.1–16.5) * |
| Total | 85 | 146,171,015 | 26 | 80,011,786 | 54.8 | 74,158 | 14,275 | 19.2 (19.0–19.6) |
Notes. Abbreviations: FEFD—Far Eastern Federal District; NCFD—North Caucasian Federal District; UFD—Ural Federal District; NWFD—Northwestern Federal District; SbFD—Siberian Federal District; SFD—Southern Federal District; VFD—Volga Federal District; CFD—Central Federal District. * Statistically significant differences compared to the mean (p < 0.05). Sources: http://www.demoscope.ru/weekly/knigi/ns_r01/pril_1.html; http://www.statdata.ru/naselenie-federalnyh-okrugov-rossii; https://en.wikipedia.org/wiki/List_of_federal_subjects_of_Russia_by_population (Accessed: 9 June 2021).