Table 1.
Potential determinants of infection estimated by SES.
| (a) All measures | |||||||
|---|---|---|---|---|---|---|---|
| Measure | SES Group | Full population | p-val, diff. between SES | ||||
| Channel | 1&2 | 3 | 4 | 5&6 | |||
| Infections outside home | Days working outside home (in last 14 days) | 6.4 | 4.8 | 3.2 | 2.5 | 4.6 | <0.001 |
| Number of non-work contacts outside home (in last 14 days) | 1.108 | 1.392 | 1.506 | 1.423 | 1.314 | 0.063 | |
| Secondary attack rate (outside home) | 15% | 13% | 8% | 12% | 13% | 0.2 | |
| Contact matrix structure | [see Panel (b)] | ||||||
| Infections inside home | Household size | 2.99 | 2.81 | 2.50 | 2.48 | 2.84 | <0.001 |
| Secondary attack rate (inside home) | 26% | 27% | 24% | 11% | 26% | 0.02 | |
| Isolation behaviour | Isolation rate after positive test result | 0.87 | 0.85 | 0.86 | 0.87 | 0.86 | 0.61 |
| # days worked when has symptoms | 3.03 | 2.29 | 2.4 | 1.5 | 2.6 | <0.001 | |
| # days worked when knowing about positive contact | 4.5 | 3.4 | 3.5 | 2.2 | 3.9 | 0.016 | |
| # days worked when someone is tested positive in same household | 2.8 | 2.4 | 2.4 | 1.9 | 2.5 | 0.0040 | |
| Testing & tracing | Share detected among positive | 11.7% | 15.2% | 22.2% | 21.3% | 16.1% | <0.001 |
| Test consultation delay in days | 5.56 | 5.59 | 5.41 | 5.26 | 5.55 | <0.001 | |
| Test results delay in days | 3.94 | 3.57 | 3.28 | 3.05 | 3.72 | <0.001 | |
| Average number of contacts traced | 1.73 | 1.74 | 1.75 | 1.75 | 1.74 | ||
| Proportion of infections that are contact traced | 81% | 84% | 88% | 89% | 83% | ||
| Population size in Bogota | 4,063,470 | 2,857,861 | 757,923 | 365,459 | 8,044,713 | ||
| Sample size in CoVIDA Survey Data | 22,171 | 31,636 | 14,608 | 7,539 | 75,954 | ||
| Sample size wih PCR test in CoVIDA Data | 15,818 | 24,450 | 11,759 | 6,158 | 58,185 | ||
| (b) Contact matrix | |||||||
|---|---|---|---|---|---|---|---|
| Contact stratum | |||||||
| Index case stratum | 1&2 | 3 | 4 | 5&6 | Total | ||
| 1&2 | 206 | 98 | 14 | 2 | 320 | ||
| 3 | 126 | 418 | 69 | 17 | 630 | ||
| 4 | 9 | 52 | 58 | 25 | 144 | ||
| 5&6 | 5 | 8 | 18 | 16 | 47 | ||
| Total | 346 | 576 | 159 | 60 | 1141 | ||
Panel (a): The table displays variables that capture various determinants of infection, sorted in four categories, followed by population and sample sizes. It provides the average value for each SES and for the population all-together. The last column presents the p-value of the F-test of difference between the 4 SES. A p-value below 0.05 means that one can reject at the 95% confidence level that the variable has population average that is equal for all SES (two-sided test). Standard deviations, Confidence Intervals, data sources and explanations of the calculation methods are presented in Table S7. Panel (b): The contact matrix enumerates the number of cases for each possible of combination of stratum of the index case and its contacts. Positive cases in the CoVIDA study were traced, from this data, We use the self-declared stratum of the index cases and all their non-household contacts to count the number of contacts within each cell.