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Table 2 Seasonal influenza vaccine effectiveness by age groups

From: Influenza vaccine effectiveness in patients hospitalized with severe acute respiratory infection in Lithuania during the 2019–2020 influenza season: a test negative case – control study

 

Unadjusted SIVE %

95% CI

p-value of the

unadjusted

model

Adjusted SIVE %

95% CI

p-value of

the adjusted

model

Any age

52.4

-63.0 to 86.1

0.237

39.2*

-119.3 to 83.1

0.447

Age 18–64 years

69.0

-236.4 to 97.2

0.335

64.0**

-309.2 to 96.8

0.410

Age ≥ 65 years

35.7

-176.1 to 85.0

0.552

21.6**

-252.2 to 82.6

0.751

  1. *Adjusted for heart diseases, age
  2. ** Adjusted for heart diseases