Survival bias and declining mortality risk in long‐term COVID‐19 studies

Wiessam Abu Ahmad; Ronen Arbel

PMC · DOI:10.1111/irv.70247·March 6, 2026

Survival bias and declining mortality risk in long‐term COVID‐19 studies

Wiessam Abu Ahmad, Ronen Arbel

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Abstract

Linked entities

Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.

Species1

Homo sapiens(human · species)

Diseases6

COVID-19 long-term COVID-19 infectious disease dying acute-phase injury organ dysfunction

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Taxonomy

TopicsCOVID-19 and healthcare impacts · COVID-19 Clinical Research Studies · Advanced Causal Inference Techniques