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Co-morbidity and blood group type risk in coronavirus disease 2019 patients: A case-control study
Mohammed Badedi1, Ali Makrami2, Awaji Alnami2
1Administration of Research & Studies, Jazan Health, Saudi Arabia.
Insights
Older age and co-morbidities like diabetes mellitus significantly increase COVID-19 mortality risk. Blood type did not show a significant association with death risk in this Saudi Arabian study.
Area of Science:
- Epidemiology
- Public Health
- Infectious Diseases
Background:
- Coronavirus disease 2019 (COVID-19) poses a significant global health threat.
- Understanding risk factors for COVID-19 mortality is crucial for effective public health interventions.
- Co-morbidities and demographic factors may influence COVID-19 outcomes.
Purpose of the Study:
- To investigate the association between co-morbidities, blood group, and mortality risk in COVID-19 patients.
- To identify independent predictors of mortality among COVID-19 cases in Jazan, Saudi Arabia.
Main Methods:
- A case-control study involving 323 adult COVID-19 patients in Jazan, Saudi Arabia.
- 108 deceased patients (cases) and 215 recovered patients (controls) were analyzed.
- Statistical analyses included chi-square tests, t-tests, and logistic regression.
Main Results:
- Older age (mean 65.4 years) was significantly associated with higher COVID-19 mortality compared to younger patients (mean 39.5 years).
- Diabetes mellitus (OR=9.4), hypertension (OR=8.6), cardiovascular disease (OR=7.4), chronic kidney disease (OR=3.3), and obesity (OR=2.0) were significant risk factors for mortality.
- Older age and diabetes mellitus were identified as primary independent predictors of COVID-19 mortality; blood group showed no significant association.
Conclusions:
- Older age and co-morbidities, particularly diabetes mellitus, are key risk factors for COVID-19 mortality.
- Future research should focus on establishing causality of death in COVID-19 patients.
Objective:
The objective of the study was to assess mortality risk associated with co-morbidities and blood group type in coronavirus disease 2019 (COVID-19) patients in Jazan, Saudi Arabia.
Methods:
This case-control study enrolled 323 Saudi adults with COVID-19, confirmed by real-time reverse transcription-polymerase chain reaction. The participants were selected randomly between August 31, 2020, and July 1, 2020, from the Health Electronic Surveillance Network system, which contains the primary data on COVID-19 infections in Jazan, Saudi Arabia. The sample included 108 patients who died due to COVID-19 disease and 215 controls who recovered from it (1:2 ratio). The chi-square test, independent samples t-test, and logistic regression were used to perform the statistical analysis.
Results:
Mortality was higher in older age patients with COVID-19 (mean = 65.4 years, standard deviation [SD] = 15.6) compared to recovered patients (mean = 39.5 years, SD = 14.8) (p<0.001) with a moderate effect size (eta squared = 0.06). Diabetes mellitus (odds ratio [OR] = 9.4), hypertension (OR = 8.6), cardiovascular disease (OR = 7.4), chronic kidney disease (OR = 3.3), and obesity (OR = 2.0) were significantly associated with death due to COVID-19. Using logistic regression analysis, older age and diabetes mellitus were the primary independent predictors of COVID-19 mortality. However, there was no significant association between a specific ABO blood group and mortality risk (P = 0.07).
Conclusion:
Older age and the presence of co-morbidities, especially diabetes mellitus, increased the risk of death in patients with COVID-19. Establishing the causality of death in patients with COVID-19 should be a key aim of future studies.
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