Risk factors influencing the prognosis of elderly patients infected with COVID-19: A clinical retrospective study in Wuhan, China

Shan Gao, Fang Jiang, Wei Jin, Yuan Shi, Leilei Yang, Yanqiong Xia, Linyan Jia, Bo Wang, Han Lin, Yin Cai, Zhengyuan Xia, Jian Peng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


The mortality rate of elderly patients with Coronavirus Disease 2019 (COVID-19) was significantly higher than the overall mortality rate. However, besides age, leading death risk factors for the high mortality in elderly patients remain unidentified. This retrospective study included 210 elderly COVID-19 patients (aged ≥ 65 years), of whom 175 patients were discharged and 35 died. All deceased patients had at least one comorbidity. A significantly higher proportion of patients in the deceased group had cardiovascular diseases (49% vs. 20%), respiratory diseases (51% vs. 11%), chronic kidney disease (29% vs. 5%) and cerebrovascular disease (20% vs. 3%) than that in the discharged group. The median levels of C-reactive protein (125.8mg/L vs. 9.3mg/L) and blood urea nitrogen (7.2mmol/L vs. 4.4mmol/L) were significantly higher and median lymphocyte counts (0.7x109/L vs. 1.1x109/L) significantly lower in the deceased group than those in the discharged group. The survival curve analysis showed that higher C-reactive protein (≥5mg/L) plus any other abnormalities of lymphocyte, blood urea nitrogen or lactate dehydrogenase significantly predicted poor prognosis of COVID-19 infected elderly patients. This study revealed that the risk factors for the death in these elderly patients included comorbidities, increased levels of C-reactive protein and blood urea nitrogen, and lymphopenia during hospitalization.

Original languageEnglish
Pages (from-to)12504-12516
Number of pages13
Issue number13
Publication statusPublished - 11 Jul 2020
Externally publishedYes


  • C-reactive protein
  • Comorbidities
  • COVID-19
  • Elderly patients
  • Risk factors

ASJC Scopus subject areas

  • Ageing
  • Cell Biology

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