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Risk factors for mortality of 557 adult patients with COVID 19 in Babol, Northern Iran: a retrospective cohort study
Insights
Older age, cerebrovascular diseases, and complications like septic shock and acute respiratory distress syndrome (ARDS) significantly increase COVID-19 mortality risk. Understanding these factors is crucial for patient outcomes.
Area of Science:
- Epidemiology
- Critical Care Medicine
- Infectious Diseases
Background:
- COVID-19 poses a significant global health threat.
- Identifying mortality risk factors is essential for effective patient management.
- Previous studies have explored various risk factors, but regional data is crucial.
Purpose of the Study:
- To investigate the key risk factors associated with mortality in COVID-19 patients.
- To provide data from Babol, Northern Iran, to inform local and broader public health strategies.
- To analyze the impact of comorbidities and complications on COVID-19 outcomes.
Main Methods:
- Retrospective cohort study design.
- Inclusion of 121 deceased and 436 discharged COVID-19 cases.
- Data collected from March 1 to April 1, 2020, in Babol, Northern Iran.
Main Results:
- Older age, cerebrovascular disease, ICU admission, and ventilator-associated pneumonia (VAP) were significant risk factors for mortality.
- Complications including septic shock, acute respiratory distress syndrome (ARDS), acute kidney failure (AKF), and acute heart failure (AHF) substantially increased mortality risk.
- Lower lymphocyte count was also strongly associated with increased mortality.
Conclusions:
- Elderly patients with comorbidities like cerebrovascular diseases face a higher risk of death from COVID-19.
- Severe complications such as pneumonia, septic shock, ARDS, AHF, and AKF are critical determinants of mortality.
- These findings underscore the importance of managing comorbidities and preventing complications in COVID-19 patients.
Background:
This study was aimed to investigate the risk factors for mortality in patients with COVID-19.
Methods:
For this retrospective cohort study, we included 121 deceased and 436 discharged cases with COVID-19 in Babol, Northern Iran. The cases were between March 1 to April 1, 2020.
Results:
Multivariate Poisson regression analysis revealed that older age (aRR: 1.03, 95% CI: 1.01, 1.05, p < 0.001), hospital length of stay (aRR: 0.94, 95% CI: 0.90, 0.97, p = 0.003), ICU admission (aRR: 4.34, 95% CI: 2.95, 6.37, p < 0.001), cerebrovascular disease (aRR: 1.96, 95% CI: 1.20, 3.19, p = 0.007), ventilator-associated pneumonia (VAP) (aRR: 2.09, 95% CI: 1.22, 3.55, p = 0.006), septic shock (aRR: 2.98, 95% CI: 1.44, 6.19, p = 0.003), acute respiratory distress syndrome (ARDS) (aRR: 3.80, 95% CI: 2.28, 6.31, p < 0.001), acute kidney failure (AKF) (aRR: 1.45, 95% CI: 1.12, 3.76, p = 0.021), acute heart failure (AHF) (aRR: 1.63, 95% CI: 1.01, 2.62, p = 0.043) and lymphocyte count (aRR: 3.01, 95% CI: 1.99, 4.57, p < 0.001) were associated with mortality.
Conclusion:
Findings showed that elderly with comorbidities such as cerebrovascular diseases had an increased risk of death. Some complications such as: pneumonia, septic shock, ARDS, AHF, and AKF played crucial roles as well death (Tab. 2, Ref. 25).
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