Table 2.
IV estimation of the relationship between LTBI and COVID-19 mortality.
| Dependent variable: Case fatality rate (CFR) | ||||
|---|---|---|---|---|
| Regressor | Model 1 (IV) | Model 1 (GMM) | Model 2 (IV) | Model 2 (GMM) |
| Ln(tb10) | −0.0198***(0.00365) | −0.0176***(. 0034) | −0.0194***(0.00365) | −0.0172***(0.00336) |
| Intercept | 0.1107***(0.01350) | 0.1039***(. 01,348) | 0.1092***(0.01,350) | 0.1012***(0.01,361) |
| Instrument variables | ||||
| bcgindex, region, pop 65 | bcgindex, region, pop 65 | bcgindex, region | bcgindex, region | |
| Wu-Hausman Test | 22.8949(p = 0.0000) | 25.0373(p = 0.000) | ||
| Sargan Test | 3.46284(p = 0.1787) | 3.2009(p = 0.0732) | ||
| Weak Instrument Test | 33.416** | 49.3901** | ||
Note: Values in parentheses represent standard errors. (***), p < 0.01 and (**), p < 005.