Table 5.

Sensitivity analysis – association between influenza vaccine uptake in each class of healthcare worker and sickness absence rate in the months outside of the flu season (April to September)

Beta95% CIp-value
Influenza vaccine uptake0.212(0.004 to 0.421)0.046
Influenza vaccine efficacy–0.003(–0.005 to –0.001)0.001
Influenza deaths0.0002(0.0001 to 0.0004)0.002
Overall engagement score (NHS staff survey)–1.203(–1.526 to –0.879)<0.001
Intercept8.530(7.291 to 9.770)<0.001