Demographics, symptomatology, occupational exposure and seroprevalence in healthcare workers in Colombia
| Variable | Sample size, n | Seropositive participants, n | Seroprevalence | Χ2 | P value | |
| Crude | Adjusted | |||||
| Age group (years) | ||||||
| 17–30 | 985 | 334 | 0.33 (0.30 to 0.36) | 0.38 (0.35 to 0.42) | 29.106 | 0.000 |
| 31–40 | 1120 | 376 | 0.3 3 (0.30 to 0.36) | 0.38 (0.35 to 0.41) | ||
| 41–50 | 663 | 197 | 0.29 (0.26 to 0.33) | 0.33 (0.29 to 0.28) | ||
| 51–60 | 397 | 85 | 0.21 (0.17 to 0.25) | 0.23 (0.19 to 0.28) | ||
| >60 | 71 | 14 | 0.19 (0.11 to 0.31) | 0.21 (0.10 to 0.32) | ||
| Female | 2508 | 775 | 0.30 (0.29 to 0.32) | 0.35 (0.32 to 0.37) | 28.209 | 0.866 |
| Male | 788 | 246 | 0.31 (0.28 to 0.34) | 0.35 (0.31 to 0.39) | ||
| Socioeconomic strata | ||||||
| 1 (lowest) | 529 | 233 | 0.44 (0.39 to 0.48) | 0.51 (0.45 to 0.55) | 104.35 | 0.000 |
| 2 | 1044 | 373 | 0.35 (0.32 to 0.38) | 0.41 (0.37 to 0.44) | ||
| 3 | 1098 | 305 | 0.27 (0.25 to 0.30) | 0.31 (0.27 to 0.34) | ||
| 4 | 460 | 96 | 0.20 (0.17 to 0.24) | 0.23 (0.18 to 0.27) | ||
| 5 | 181 | 36 | 0.19 (0.14 to 0.26) | 0.22 (0.14 to 0.28) | ||
| 6 (highest) | 68 | 7 | 0.10 (0.04 to 0.20) | 0.10 (0.01 to 0.18) | ||
| Ethnicity | ||||||
| Afro-Colombian | 216 | 87 | 0.40 (0.33 to 0.47) | 0.46 (0.38 to 0.53) | 21.049 | 0.179 |
| White | 995 | 290 | 0.29 (0.26 to 0.32) | 0.33 (0.29 to 0.36) | ||
| Indigenous | 112 | 46 | 0.41 (0.31 to 0.50) | 0.47 (0.36 to 0.58) | ||
| Mestizo | 2004 | 606 | 0.30 (0.28 to 0.32) | 0.34 (0.31 to 0.36) | ||
| Raizal | 19 | 5 | 0.26 (0.10 to 0.51) | 0.29 (0.05 to 0.53) | ||
| Gipsy | 6 | 2 | 0.33 (0.05 to 0.75) | — | ||
| Others | 27 | 14 | 0.51 (0.32 to 0.70) | 0.6 (0.37 to 0.82) | ||
| Educational level | ||||||
| Bachelor | 235 | 96 | 0.40 (0.34 to 0.47) | 0.47 (0.39 to 0.54) | 91.021 | 0.000 |
| Specialisation | 524 | 91 | 0.17 (0.14 to 0.20) | 0.19 (0.14 to 0.22) | ||
| Technologist | 263 | 89 | 0.33 (0.28 to 0.39) | 0.38 (0.31 to 0.45) | ||
| Technical | 1198 | 449 | 0.37 (0.34 to 0.40) | 0.43 (0.39 to 0.46) | ||
| Professional | 1025 | 292 | 0.28 (0.25 to 0.31) | 0.32 (0.28 to 0.35) | ||
| Others | 23 | 10 | 0.43 (0.23 to 0.65) | 0.5 (0.25 to 0.74) | ||
| Master’s degree | 107 | 22 | 0.20 (0.13 to 0.29) | 0.22 (0.13 to 0.31) | ||
| Doctoral degree | 5 | 1 | 0.20 (0.01 to 0.70) | — | ||
| Service | ||||||
| Adult ICU | 309 | 84 | 0.27 (0.22 to 0.32) | 0.30 (0.24 to 0.36) | 58.994 | 0.000 |
| General services | 21 | 7 | 0.33 (0.15 to 0.56) | 0.37 (0.13 to 0.61) | ||
| Reference and counter-reference | 49 | 14 | 0.28 (0.17 to 0.43) | 0.32 (0.16 to 0.47) | ||
| Radiology | 55 | 16 | 0.29 (0.18 to 0.43) | 0.32 (0.18 to 0.47) | ||
| Laboratory | 150 | 32 | 0.21 (0.15 to 0.28) | 0.23 (0.15 to 0.31) | ||
| Hospitalisation | 761 | 251 | 0.32 (0.29 to 0.36) | 0.37 (0.33 to 0.41) | ||
| Pharmacy | 15 | 2 | 0.13 (0.02 to 0.41) | 0.13 (0.00 to 0.34) | ||
| External consultation | 306 | 83 | 0.27 (0.22 to 0.32) | 0.30 (0.24 to 0.36) | ||
| Surgery | 128 | 41 | 0.32 (0.24 to 0.40) | 0.36 (0.26 to 0.45) | ||
| City | ||||||
| Bogotá | 677 | 204 | 0.30 (0.26 to 0.33) | 0.34 (0.30 to 0.38) | 146.87 | 0.000 |
| Barranquilla | 434 | 167 | 0.38 (0.33 to 0.43) | 0.44 (0.39 to 0.50) | ||
| Bucaramanga | 508 | 118 | 0.23 (0.19 to 0.27) | 0.26 (0.21 to 0.30) | ||
| Cali | 500 | 154 | 0.31 (0.26 to 0.35) | 0.35 (0.30 to 0.40) | ||
| Cúcuta | 423 | 100 | 0.24 (0.19 to 0.28) | 0.26 (0.21 to 0.31) | ||
| Medellín | 470 | 91 | 0.19 (0.15 to 0.23) | 0.21 (0.17 to 0.25) | ||
| Villavicencio | 395 | 186 | 0.47 (0.42 to 0.52) | 0.54 (0.49 to 0.60) | ||
| Leticia | 176 | 66 | 0.38 (0.30 to 0.45) | 0.43 (0.34 to 0.52) | ||
| Ipiales | 388 | 124 | 0.32 (0.27 to 0.36) | 0.36 (0.31 to 0.42) | ||
| Guapi | 71 | 43 | 0.61 (0.48 to 0.71) | 0.71 (0.57 to 0.84) | ||
Sociodemographic characteristics of the participants in the study. The table also reports the crude seroprevalence and 95% CIs.
ICU, intensive care unit.