Figure 3. Association between vaccination and all‐cause mortality was assessed for each 2‐month period of follow‐up as landmark analyses.

This analysis considers all seasons with follow‐up extended from the 4 months “in‐season” period (December 1–April 1 the following year) to a full year (December 1–December 1 the following year). The reference is no vaccination in the given season and the Cox regression models were adjusted for all variables displayed in the Table.