Table 2.
Multivariate regression predicting the association between COVID-19 testing and COVID-19 fatality rates—Aims 1 and 2
| a. Liang et al. (June 2020) 6 | b. Current study (March 2021) | Ratio of RRs (95%CI) | |||||
|---|---|---|---|---|---|---|---|
| RR | SE | 95% CI | RR | SE | 95% CI | ||
| Number of tests per 100 people | 0.92 | 0.02 | 0.87–0.96* | 0.860 | 0.07 | 0.740–0.999* | 0.97 (0.84, 1.12) |
| Case number per 1000 people | 1.03 | 0.04 | 0.95–1.10 | 0.999 | 0.00 | 0.994–1.006 | 0.99 (0.91, 1.07) |
| Critical case rate (%) | 1.05 | 0.06 | 0.94–1.18 | 1.864 | 0.80 | 1.017–3.418* | 1.28 (0.27, 6.18) |
| Government effectiveness score | 0.96 | 0.02 | 0.92–0.99* | 0.924 | 0.02 | 0.892–0.957* | 0.98 (0.93, 1.04) |
| Population aged 65 or older (%) | 1.12 | 0.02 | 1.07–1.17* | 1.002 | 0.02 | 0.957–1.050 | 0.95 (0.90, 1.01) |
| Bed number per 1000 people | 0.85 | 0.03 | 0.80–0.90* | 0.981 | 0.03 | 0.919–1.048 | 1.06 (0.98, 1.16) |
| Communicable disease death rate (%) | 0.99 | 0.01 | 0.98–1.00 | 0.984 | 0.01 | 0.972–0.995* | 1.00 (0.97, 1.02) |
| Transport infrastructure quality score | 1.08 | 0.03 | 1.03–1.14* | 1.112 | 0.02 | 1.069–1.156* | 1.01 (0.94, 1.09) |
Liang et al.6 (June 2020): 101 countries were included in the regression analysis
Current study (March 2021): 105 countries were included in the regression analysis
*Significant findings
Description: This table shows the risk ratios resulting from the multivariate regressions from the previous study (a.) and the current study (b.). In addition, a statistical comparison of the difference between the risk ratios at the two time points