Prognostic role of demographic indicators and Charlson comorbidity index in oxygen-dependent patients with coronavirus disease (COVID-19)

Abstract

Aim. The aim of our work is to establish the prognostic significance of demographic indicators and the Charlson comorbidity index (CCI) in oxygen-dependent patients with coronavirus disease (COVID-19). Material and methods. The research included 211 oxygen-dependent patients with COVID-19: I group – 94 patients who recovered; II group – 117 patients, the disease ended fatally. We used the WHO age classification when analyzing the age structure of patients. The Charlson comorbidity index was calculated for each patient. The patients were divided into groups Statistical data processing was carried out in the program Statistica for Windows 13 (StatSoft Inc., No. JPZ804I382130ARCN10-J). Results. It was established that the median age of the ІІ group patients was higher (P 66 years (AUC = 0.636, Р = 0.002), the probability of a fatal outcome of COVID-19 was significant. Analysis of the influence of comorbid conditions on the risk of COVID-19 fatal outcome in oxygen-dependent patients according to the CCI showed that the absence of comorbid pathology was more common among patients of group I than among patients of group II (12.8 % vs. 2.6 %, P = 0.004). The level of CCI in patients of the II group significantly exceeded the corresponding indicator of the patients of the I group (P 5 in oxygen-dependent patients with COVID-19 (AUC = 0.652, P 66 years (AUC = 0.636, P = 0.002) and the Charlson comorbidity index >5, the probability of a fatal outcome of the disease is significant (AUC = 0.652, P < 0.001).

Keywords

• coronavirus disease covid-19
• viral infection
• comorbidity
• risk factors
• prognosis