Influenza Vaccine Effectiveness in the Elderly Based on Administrative Databases: Change in Immunization Habit as a Marker for Bias

Efficacy Studies of Influenza Vaccines: Effect of End Points Used and Characteristics of Vaccine Failures

(2011) Joshua G. Petrie et al.   JOURNAL OF INFECTIOUS DISEASES

Influenza Vaccination and Mortality: Differentiating Vaccine Effects From Bias

(2009) Bruce Fireman et al.   AMERICAN JOURNAL OF EPIDEMIOLOGY

Evidence of Bias in Studies of Influenza Vaccine Effectiveness in Elderly Patients

(2009) Roger Baxter et al.   JOURNAL OF INFECTIOUS DISEASES

Instrumental Variables in Influenza Vaccination Studies: Mission Impossible?!

(2009) Rolf H.H. Groenwold et al.   VALUE IN HEALTH

Mortality Reduction with Influenza Vaccine in Patients with Pneumonia Outside “Flu” Season

(2008) Dean T. Eurich et al.   AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE

Component‐Specific Effectiveness of Trivalent Influenza Vaccine as Monitored through a Sentinel Surveillance Network in Canada, 2006–2007

(2008) Danuta M. Skowronski et al.   JOURNAL OF INFECTIOUS DISEASES

Influenza vaccination and risk of community-acquired pneumonia in immunocompetent elderly people: a population-based, nested case-control study

(2008) Michael L Jackson et al.   LANCET

Effect of influenza and pneumococcal vaccines in elderly persons in years of low influenza activity

(2008) Brith Christenson et al.   Virology Journal