Fig. 1From: Host susceptibility to severe COVID-19 and establishment of a host risk score: findings of 487 cases outside WuhanDefinition of host risk factor score and incidences of severe cases by host risk score. The host risk factor score was calculated by the sum of three variables (a). The incidences of severe cases at admission (b) or developing during hospitalization (c) were compared across the different score groups by a linear-by-linear association testBack to article page