Fig. 4From: Peripheral blood indicators and COVID-19: an observational and bidirectional Mendelian randomization studyThe causal association of candidate blood indicators on COVID-19. Forest plot for causal effects of blood indicators on three subtypes of COVID-19 (COVID-19 infection, hospitalization, and severity).The red diamonds indicated higher odds of COVID-19 (P < 0.05), the blue diamonds indicated lower odds of COVID-19 (P < 0.05), and the grey diamonds indicated the odds of COVID-19 (P > 0.05)Back to article page