Skip to main content
. Author manuscript; available in PMC: 2023 Jun 5.
Published in final edited form as: Infect Control Hosp Epidemiol. 2018 Mar 8;39(4):452–461. doi: 10.1017/ice.2018.9

TABLE 5.

Unadjusted Sick Day Ratio of Influenza Vaccinated and Nonvaccinated ResPECT Participants

VRI Season CDC Estimated Influenza Vaccine Efficacy for the Season, %39 Vaccinated Subjects, No. (SDR) Unvaccinated Subjects, No. (SDR)
2012–2013 49 930 (0.62) 143 (1.03)
2013–2014 52 1,127 (0.58) 248 (1.00)
2014–2015 19 1,242 (0.60) 373 (0.66)

NOTE. VRI, viral respiratory illness, SDR, sick day ratio; HCP, healthcare personnel. Poisson regression was used to test the effects of vaccination on the number of sick days reported with year included as a covariate. The vaccinated HCP were estimated to have a 3-year mean reduction of 29% in absenteeism rate compared to unvaccinated HCP (relative rate, 0.71; 95% CI, 0.67–0.74; P ≤ .001).