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Investigating the Survival-Related Factors in the Hospitalized Elderly Patients With Covid-19



Faraji N1 ; Alizadeh NS2 ; Akrami M3 ; Kheyri Z4 ; Hosamirudsari H5 ; Zarei JN6 ; Akbarpour S7 ; Arefi M8 ; Taghizadeh F9 ; Mohammadnejad S10 ; Goudarzi F10
Authors
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Authors Affiliations
  1. 1. Internal Medicine, Department of Internal Medicine, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Clinical Pharmacy Specialist, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Department of Anesthesiology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Gastroenterology and Hepatology, Baharlou Hospital, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Infectious Diseases, Department of Infectious Diseases, Baharlou Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  6. 6. Internal Medicine, Department of Internal Medicine, Imam Khomeini Hospital Complex, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. Epidemiology, Occupational Sleep Research Center, Tehran University of Medical Sciences, Tehran, Iran
  8. 8. Internal Medicine, Department of Forensic Medicine, Baharlou Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  9. 9. Baharloo Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
  10. 10. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Iranian Journal of Epidemiology Published:2021

Abstract

Background and Objectives: Reports indicates a higher mortality rate of Covid-19 in the elderly. A limited number of studies have been performed on elderly patients in Iran. In the present study, we investigated the clinical features and survival of elderly patients with Covid-19 in Baharloo Hospital, Tehran, Iran. Methods: This retrospective cohort study was conducted on the data of elderly patients with Covid-19 admitted to Baharloo Hospital, Tehran, Iran. The data of the hospitalized patients were followed until discharge or death. Finally, survival-related factors were analyzed using Cox regression. Results: A total of 522 patients were enrolled in the study, of whom 53.8% were male and 101 died. The mean age of the deceased was 76.3 years, with a standard deviation of 8.6 years. The most common clinical symptoms at the time of admission were respiratory distress (69.5%), cough (61.1%), and fever (51.1%). Cox regression results showed that the risk of death increased by 5% for each one-year increase in age. In addition, calcium supplementation reduced the risk of death by 35%. Conclusion: The results of the present study showed that calcium supplementation could be associated with increased survival of the elderly and reduced mortality. Due to calcium insufficiency in the Iranian population and the protective role of calcium in Covid-19, this issue is essential in the elderly patients warranting further investigation in the future. © 2021, Iranian Epidemiological Association. All rights reserved.
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