ArticleMayo Clinic proceedings. Innovations, quality & outcomes2023
Rates Among Hospitalized Patients With COVID-19 Treated With Convalescent Plasma: A Systematic Review and Meta-Analysis.
Article in Mayo Clinic proceedings. Innovations, quality & outcomes, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 36 citations in OpenAlex.
- The Impact of Study Size on COVID-19 Treatment Outcomes: A Meta-Epidemiological Study Comparing Large and Small Randomized Controlled Trials: A Systematic Review and Meta-Analyses.Reviews in medical virology · 2026Pooled it
- Intranasal administration of convalescent plasma protects against SARS-CoV-2 infection in hamsters.EBioMedicine · 2023Pooled it
- COVID-19 convalescent plasma safety and efficacy analysis for biologics license application approval.Expert review of anti-infective therapy · 2026Review
- Review
- Hospitalizations with blood transfusions and transfusion-related adverse events in US acute care hospitals, 2016-2020.Transfusion · 2025Article
- Review
- Rapid clinical effects of convalescent plasma therapy in severe COVID-19 acute respiratory distress syndrome (ARDS).Intensive care medicine · 2025Article
- The effectiveness of convalescent plasma administered on the first day of admission for COVID-19 patients: an open-label randomized controlled trial.Infectious diseases & immunity · 2025Article
- Convalescent Plasma and the US Expanded Access Program: A Personal Narrative.Current topics in microbiology and immunology · 2025Review
- Convalescent Plasma and Other Antibody Therapies for Infectious Diseases-Lessons Learned from COVID-19 and Future Prospects.Current topics in microbiology and immunology · 2025Review
- Evidence for the Efficacy of COVID-19 Convalescent Plasma.Current topics in microbiology and immunology · 2025Review
- Biochemical rationale for transfusion of high titre COVID-19 convalescent plasma.Scientific reports · 2024Article
- Estimates of actual and potential lives saved in the United States from the use of COVID-19 convalescent plasma.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Avoided and Avoidable Deaths with the Use of COVID-19 Convalescent Plasma in Italy during the First Two Years of Pandemic.Life (Basel, Switzerland) · 2024Article
- Exploring Study Design Foibles in Randomized Controlled Trials on Convalescent Plasma in Hospitalized COVID-19 Patients.Life (Basel, Switzerland) · 2024Review
- COVID-19 therapeutics.Clinical microbiology reviews · 2024Review
- Article
- Safety and Efficacy of Convalescent Plasma Combined with Other Pharmaceutical Agents for Treatment of COVID-19 in Hospitalized Patients: A Systematic Review and Meta-Analysis.Diseases (Basel, Switzerland) · 2024Review
- Hyperimmune Plasma and Immunoglobulins against COVID-19: A Narrative Review.Life (Basel, Switzerland) · 2024Review
- Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
50 authors at 12 institutions in 3 countries.
Funding
Abstract
Objective: To examine the association of COVID-19 convalescent plasma transfusion with mortality and the differences between subgroups in hospitalized patients with COVID-19. Patients and Methods: On October 26, 2022, a systematic search was performed for clinical studies of COVID-19 convalescent plasma in the literature from January 1, 2020, to October 26, 2022. Randomized clinical trials and matched cohort studies investigating COVID-19 convalescent plasma transfusion compared with standard of care treatment or placebo among hospitalized patients with confirmed COVID-19 were included. The electronic search yielded 3841 unique records, of which 744 were considered for full-text screening. The selection process was performed independently by a panel of 5 reviewers. The study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Data were extracted by 5 independent reviewers in duplicate and pooled using an inverse-variance random effects model. The prespecified end point was all-cause mortality during hospitalization. Results: Thirty-nine randomized clinical trials enrolling 21,529 participants and 70 matched cohort studies enrolling 50,160 participants were included in the systematic review. Separate meta-analyses reported that transfusion of COVID-19 convalescent plasma was associated with a decrease in mortality compared with the control cohort for both randomized clinical trials (odds ratio [OR], 0.87; 95% CI, 0.76-1.00) and matched cohort studies (OR, 0.76; 95% CI, 0.66-0.88). The meta-analysis of subgroups revealed 2 important findings. First, treatment with convalescent plasma containing high antibody levels was associated with a decrease in mortality compared with convalescent plasma containing low antibody levels (OR, 0.85; 95% CI, 0.73 to 0.99). Second, earlier treatment with COVID-19 convalescent plasma was associated with a decrease in mortality compared with the later treatment cohort (OR, 0.63; 95% CI, 0.48 to 0.82). Conclusion: During COVID-19 convalescent plasma use was associated with a 13% reduced risk of mortality, implying a mortality benefit for hospitalized patients with COVID-19, particularly those treated with convalescent plasma containing high antibody levels treated earlier in the disease course.
Identifiers
What Socratic holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.