ArticleJournal of clinical medicine2023
Patients Hospitalized for COVID-19 in the Periods of Delta and Omicron Variant Dominance in Greece: Determinants of Severity and Mortality.
Article in Journal of clinical medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Increased Antimicrobial Consumption, Isolation Rate, and Resistance Profiles of Multi-Drug ResistantAntibiotics (Basel, Switzerland) · 2025Article
- The Risk Factors for Post-Bronchoscopy Respiratory Infection in Lung Cancer Patients-A Retrospective Case-Control Study from a Center in Greece.Journal of clinical medicine · 2025Article
- Long-Term Lung Sequelae in Survivors of Severe/Critical COVID-19 Pneumonia: The "Non-Steroid", "Non-Interventional" Approach.Journal of clinical medicine · 2025Article
- Investigating a middle‑step COVID‑19 unit in Greece.Experimental and therapeutic medicine · 2025Article
- Comparison of Clinical Characteristics and Mortality Outcome in Critical COVID-19 Patients Infected with Alpha and Omicron Variants.Infection and drug resistance · 2025Article
- Elevated non-invasive liver fibrosis scores at admission are independent risk factors for severe COVID-19: a retrospective cohort study from 2020 to 2024.Frontiers in medicine · 2025Article
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39 authors.
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Abstract
backgroundCoronavirus disease 2019 (COVID-19) has been a pandemic since 2020, and depending on the SARS-CoV-2 mutation, different pandemic waves have been observed. The aim of this study was to compare the baseline characteristics of patients in two phases of the pandemic and evaluate possible predictors of mortality.
methodsThis is a retrospective multicenter observational study that included patients with COVID-19 in 4 different centers in Greece. Patients were divided into two groups depending on the period during which they were infected during the Delta and Omicron variant predominance.
resultsA total of 979 patients (433 Delta, 546 Omicron) were included in the study (median age 67 years (54, 81); 452 [46.2%] female). Compared to the Omicron period, the patients during the Delta period were younger (median age [IQR] 65 [51, 77] vs. 70 [55, 83] years,
conclusionsIn the Omicron wave, patients were older with a higher number of comorbidities, but patients with the Delta variant had more severe disease and a longer duration of hospitalization.
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