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Fig. 1 | BMC Infectious Diseases

Fig. 1

From: Risk factors for mortality in patients over 70 years old with COVID-19 in Wuhan at the early break: retrospective case series

Fig. 1

Survival curves for elderly COVID-19 patients with different severity of disease and blood urea nitrogen. A, Elderly patients in severe and critical type had higher risk of death when compared with the general type (P = 0.00075). B, Elderly patients with elevated level of BUN (> 9.5 mmol/L) had higher risk of death (P <  0.0001)

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