A stepwise increase in the odds of lacking influenza vaccination with increasing high-risk characteristics was noted. Individuals with 4 or more high-risk characteristics had nearly 6-fold higher odds of lacking influenza vaccination.
aHigh-risk characteristics include age 40 to 64 years, non-Hispanic Black race/ethnicity, low/poor family income, uninsured, lack of usual source of care, and high school education level or less.
bModel adjusted for sex, geographic region, cardiovascular risk factors, and comorbidities. Odds ratios (ORs) and 95% CIs are presented on a log scale.