Repository of Research and Investigative Information

Repository of Research and Investigative Information

Ilam University of Medical Sciences

On-Admission Anemia and Survival Rate in COVID-19 Patients

Sat Apr 20 14:42:34 2024

(2022) On-Admission Anemia and Survival Rate in COVID-19 Patients. Iranian biomedical journal. pp. 389-97. ISSN 2008-823X (Electronic) 1028-852X (Print) 1028-852X (Linking)

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Official URL: https://www.ncbi.nlm.nih.gov/pubmed/36369775

Abstract

Anemia often worsens the severity of respiratory illnesses, and few studies have so far elucidated the impact of anemia on COVID-19 infection. This study aimed to evaluate the effect of anemia at admission on the overall survival of COVID-19 patients using accelerated failure time (AFT) models. This registry-based, single-center retrospective cohort study was conducted in a university hospital in Ilam, the southwest of Iran, between March 2020 and September 2021. AFT models were applied to set the data of 2,441 COVID-19 patients. Performance of AFT models was assessed using Akaike's information criterion (AIC) and Cox-Snell residual. On-admission anemia was defined as hemoglobin (Hb) concentration <120 g/l in men, <110 g/l in women, and <100 g/l in pregnant women. The median in-hospital survival times for anemic and non-anemic patients were 27 and 31 days, respectively. Based on the AIC and Cox-Snell residual graph, the Weibull model had the lowest AIC and it was the best fitted model to the data set among AFT models. In the adjusted model, the results of the Weibull model suggested that the anemia (adjusted time ratio: 1.04; 95 CI: 1.00-1.08; p = 0.03) was the accelerated factor for progression to death in COVID-19 patients. Each unit of increase in hemoglobin in COVID-19 patients enhanced the survival rate by 4. Anemia is an independent risk factor associated with the risk of mortality from COVID-19 infection. Therefore, healthcare professionals should be more sensitive to the Hb level of COVID-19 patients upon admission.

Item Type: Article
Creators:
CreatorsEmail
Asadzadeh, R.UNSPECIFIED
Mozafari, A.UNSPECIFIED
Shafiei, E.UNSPECIFIED
Kaffashian, M.UNSPECIFIED
Ahmadi, I.UNSPECIFIED
Darvish, M.UNSPECIFIED
Bastaminejad, S.UNSPECIFIED
Keywords: Pregnancy Male Humans Female Survival Rate *covid-19 Retrospective Studies *Anemia/complications Risk Factors Anemia Covid-19 Mortality Survival
Divisions:
Page Range: pp. 389-97
Journal or Publication Title: Iranian biomedical journal
Journal Index: Pubmed
Volume: 26
Number: 5
Identification Number: https://doi.org/10.52547/ibj.3703
ISSN: 2008-823X (Electronic) 1028-852X (Print) 1028-852X (Linking)
Depositing User: مهندس مهدی شریفی
URI: http://eprints.medilam.ac.ir/id/eprint/4275

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