Figure 2. Association between influenza vaccination and the risk of death when considering all seasons included in the study with 95% CIs depicted as error bars.

Hazard ratios were produced with multivariable Cox regression models stratified on season year with patient‐level cluster variances. The models were adjusted for all variables from the Table. AMI indicates acute myocardial infarction; HR, hazard ratio; and PY, person‐years.