Table 3.
Logistic model results for the effect of contact tracing on fatality from COVID-19 in Colombia, March 2020–January 2021.
| Variable | OR | SE | P-value | 95% CI | |
|---|---|---|---|---|---|
| Chains with five or more contacts | 0.45 | 0.016 | 0.000 | 0.42 | 0.49 |
| Index (suspected case) | 0.73 | 0.013 | 0.000 | 0.71 | 0.76 |
| Male sex | 2.10 | 0.022 | 0.000 | 2.06 | 2.14 |
| Age in years | |||||
| Less than 30 | 4.30 | 0.168 | 0.00 | 3.98 | 4.64 |
| 30 to 49 | 30.13 | 1.102 | 0.000 | 28.04 | 32.37 |
| 50 to 69 | 114.22 | 4.258 | 0.000 | 106.18 | 122.88 |
| 70 to 79 | 240.46 | 9.008 | 0.000 | 223.44 | 258.78 |
| 80 or more | |||||
| Comorbidities | |||||
| Diabetes | 1.62 | 0.028 | 0.000 | 1.57 | 1.68 |
| Cardiovascular disease | 1.21 | 0.017 | 0.000 | 1.18 | 1.24 |
| Chronic respiratory disease | 1.58 | 0.037 | 0.000 | 1.50 | 1.65 |
| Cancer | 1.76 | 0.055 | 0.000 | 1.65 | 1.87 |
| Immunodeficiency | 2.01 | 0.126 | 0.000 | 1.78 | 2.28 |
| Health system regime | |||||
| Contributory | 1.00 | ||||
| Subsidiary | 1.60 | 0.024 | 0.000 | 1.56 | 1.65 |
| Special | 1.30 | 0.038 | 0.000 | 1.23 | 1.37 |
| Non-registered | 1.75 | 0.023 | 0.000 | 1.70 | 1.79 |
| Region | |||||
| Andean | |||||
| Caribbean | 1.18 | 0.017 | 0.000 | 1.14 | 1.21 |
| Pacific | 1.09 | 0.018 | 0.000 | 1.06 | 1.13 |
| Amazonia | 1.29 | 0.049 | 0.000 | 1.20 | 1.39 |
| Orinoquia | 1.16 | 0.041 | 0.000 | 1.08 | 1.24 |
| Unknown | 0.18 | 0.005 | 0.000 | 0.17 | 0.18 |
| Socio-economic status | |||||
| 1 (very low) | 0.20 | 0.028 | 0.000 | 0.15 | 0.26 |
| 2 (low) | 1.99 | 0.099 | 0.000 | 1.80 | 2.19 |
| 3 (middle to low) | 1.89 | 0.092 | 0.000 | 1.71 | 2.07 |
| 4 (middle) | 1.37 | 0.067 | 0.005 | 1.24 | 1.50 |
| 5 (middle to high) | 1.17 | 0.064 | 0.000 | 1.05 | 1.30 |
| 6 (high) | 1.00 | ||||
| Undefined | 0.88 | 0.044 | 0.012 | 0.80 | 0.97 |
Pseudo R2 = 0.3245. OR, odds ratio; SD, standard error; CI, confidence interval.