Medical Evaluation of Vital Factors Affecting Survival Rate of COVID-19 Patients: A Systematic Review and Meta-Analysis


  • Nasrin Nouri, Shahaboddin Mashaei, Solaleh Savoji, Farahnaz Ghafour Haveshki, Mehdi Vafadar


COVID-19, Vital Signs, Survival Rate, Patient


Background and aim: the purpose of present study was evaluation of vital factors affecting survival rate of COVID-19 patients.

Method: all articles published in international databases such as PubMed, Scopus, Science Direct, Embase between January 2019 and March 2022 included. Google Scholar search engine was used; Used PECO strategy to answer the research questions. Data analysis was performed using STATA.V16 software.

Result: In the initial search, 218 studies were identified; full text of 63 articles was reviewed; finally nine articles entered the analysis. Mean differences of SpO2, Heart rate, Systolic and Diastolic blood pressure between Survival and death groups was 3.15 (MD; 95 CI (2.93, 3.37), p<0.05), 2.20 (MD; 95 CI (-3.19, -1.22) p<0.05) (I2=30.5%; p=0.20) and 2.30 (MD; 95 CI (1.04 - 3.55), p<0.05) and 4.49 (MD; 95 CI 3.80, 5.17), p<0.05), respectively.

Conclusion: survival rate in patients with Covid-19 is directly related to the vital signs and level of consciousness of patients, so that with increasing heart rate and respiratory rate, mortality rate increases.