COVID-19 vaccination effectiveness in the population of Friuli Venezia Giulia, North-East Italy. Control of bias associated with divergent compliance to policies in a test-negative case-control study

• Main Authors: Valentina Rosolen (Author), Federico Turoldo (Author), Gianna Zamaro (Author), Flavio Del Bianco (Author), Patrizio Pezzotti (Author), Luigi Castriotta (Author), Fabio Barbone (Author)
• Format: Book
• Published: BMC, 2023-12-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Abstract Background Vaccine effectiveness (VE) studies consolidate knowledge of real-world effectiveness in different contexts. However, methodological issues may undermine their conclusions: to assess the VE against COVID-19 within the Italian population, a specific threat to validity is related to...