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Predictors for cause-specific and timing of deaths in patients with COVID-19: a cohort study in Taiwan
Yung-Feng Yen1,2,3,4,5, Shang-Yih Chan3,6, Yun-Ju Lai3,7,8,9
1Section of Infectious Diseases, Taipei City Hospital, Heping Fuyou Branch Branch, Taipei, Taiwan.
Insights
Prioritizing COVID-19 vaccination and monitoring elderly and comorbid patients can reduce COVID-19 related deaths. This study identified key predictors for cause-specific and timing of deaths in hospitalized COVID-19 patients in Taiwan.
Area of Science:
- Epidemiology
- Infectious Diseases
- Public Health
Background:
- COVID-19 poses significant mortality risks, necessitating identification of predictors for death.
- Understanding cause-specific and timing of mortality is crucial for effective patient management.
Purpose of the Study:
- To determine predictors for cause-specific and timing of deaths in COVID-19 patients in Taiwan.
- To identify risk factors influencing mortality outcomes in hospitalized COVID-19 cases.
Main Methods:
- A cohort study involving laboratory-confirmed COVID-19 patients admitted to Taipei City Hospital between January 1 and July 31, 2022.
- Follow-up until death, discharge, or August 31, 2022, with early deaths (within 2 weeks) recorded.
- Multinomial Cox proportional hazards regression analysis used to identify predictors of cause-specific and timing of deaths.
Main Results:
- Older age (≥65 years) significantly increased the risk of COVID-19-specific, non-COVID-19-specific, early, and late deaths.
- Full vaccination was associated with a lower risk of COVID-19-specific and early deaths.
- Comorbidities, such as chronic obstructive pulmonary disease, increased the risk of non-COVID-19-specific deaths.
Conclusions:
- Prioritizing COVID-19 vaccination can reduce the risk of COVID-19-specific and early deaths.
- Close monitoring of hospitalized patients with comorbidities is essential to mitigate non-COVID-19-specific mortality.
- These findings support targeted interventions to improve outcomes for high-risk COVID-19 patients.
Background:
This cohort study determines the predictors for cause-specific and timing of deaths in patients with COVID-19 in Taiwan.
Methods:
Patients with laboratory-confirmed COVID-19 admitted to Taipei City Hospital from January 1 to July 31, 2022, were recruited in this cohort. All patients were followed up until death, discharge from the hospital, or August 31, 2022. Early deaths within the first 2 weeks were recorded, and the cause of death was confirmed by the death certificate database of Taiwan. Predictors of cause-specific and timing of deaths of patients with COVID-19 were determined using multinomial Cox proportional hazards regression analysis.
Results:
Of the 195 (8.0%) patients who died during hospitalization, 147 (84.0%) had COVID-19-specific deaths. Moreover, 54.9% of the deceased patients had early death. After controlling for other covariates, patients aged ≥ 65 years had a higher risk of COVID-19-specific, non-COVID-19-specific, early, and late deaths [adjusted hazards ratio (AHR): 3.85, 6.45, 3.33, and 6.57; 95% confidence interval (CI): 1.91-7.78, 1.17-35.68, 1.51-7.36, and 2.18-19.76, respectively]. Fully vaccinated patients had a lower risk of COVID-19-specific (AHR: 0.68; 95% CI: 0.47-0.98) and early deaths (AHR: 0.54; 95% CI: 0.35-0.84), whereas comorbid patients with chronic obstructive pulmonary disease had a higher risk of non-COVID-19-specific deaths (AHR: 5.43; 95% CI: 1.73-17.03).
Conclusions:
This study suggests that prioritizing COVID-19 vaccination and carefully monitoring comorbid patients during hospitalization can reduce the risk of COVID-19-specific and early deaths and non-COVID-19-specific mortalities, respectively.
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