[HTML][HTML] A Critical Analysis of All-Cause Deaths during COVID-19 Vaccination in an Italian Province

M Alessandria, GM Malatesta, F Berrino, A Donzelli - Microorganisms, 2024 - mdpi.com
Immortal time bias (ITB) is common in cohort studies and distorts the association estimates
between the treated and untreated. We used data from an Italian study on COVID-19 …

Biases in COVID-19 vaccine effectiveness studies using cohort design

S Agampodi, BT Tadesse, S Sahastrabuddhe… - Frontiers in …, 2024 - frontiersin.org
Observational studies on COVID-19 vaccine effectiveness (VE) have provided critical real-
world data, informing public health policy globally. These studies, primarily using pre …

Effectiveness of the First and Second Severe Acute Respiratory Syndrome Coronavirus 2 Vaccine Dose: A Nationwide Cohort Study From Austria on Hybrid Versus …

A Chalupka, U Riedmann, L Richter… - Open Forum …, 2024 - academic.oup.com
Background We aimed to evaluate the effectiveness of severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) vaccinations in previously SARS-CoV-2–infected adults in the …

The importance of falsification endpoints in observational studies of vaccination to prevent severe disease: A critique of a harm–benefit analysis of BNT162b2 …

TB Høeg, A Haslam, V Prasad - Epidemiology & Infection, 2024 - cambridge.org
We explore one systematic review and meta-analysis of both observational and randomized
studies examining COVID-19 vaccines in 5-to 11-year-olds, which reported substantial …

All-cause mortality according to COVID-19 vaccination status: An analysis of the UK office for National statistics public data

M Alessandria, G Malatesta, G Di Palmo… - …, 2024 - f1000research.com
Background The mass vaccination campaign against COVID-19 has been commonly
considered the best response to the global COVID-19 pandemic crisis. However, to assess …

A Reanalysis of an Italian Study on the Effectiveness of COVID-19 Vaccination Suggests That It Might Have Unintended Effects on Total Mortality

M Alessandria, G Malatesta, F Berrino, A Donzelli - 2024 - preprints.org
Immortal-time bias (ITB) is known to be common in cohort studies and distorts the
association estimates between treated and untreated groups. We used data from the last of …

[HTML][HTML] A Novel Practical Approach for Directly Assessing COVID-19 Vaccine Efficacy against Hospitalization

S Kirsch, P Marik, C Rogers, K Cosgrove, MN Mead - 2024 - preprints.org
We revisit a 2023 JAMA-published analysis of data from patients admitted for either COVID-
19 or influenza to US Veterans Administration (VA) hospitals in the fall/winter of 2022-2023 …

[PDF][PDF] Healthy vaccinee effect: a bias not to be forgotten in observational studies on COVID‑19 vaccine effectiveness

Ł Pietrzak, K Polok, R Halik… - POLISH ARCHIVES …, 2024 - researchgate.net
POLISH ARCHIVES OF INTERNAL MEDICINE 2024; 134 (2) 2 these subgroups during the
surge of COVID‑19 cases, considering that in the years 2020–2022, COVID‑19 deaths …