Partial List of Factors from the Literature That Are Significantly Correlated with Rates of Influenza Immunizations
| Demographic Factors |
| Increases Flu shot rates |
| Higher educational level2 |
| Increased age2,3 |
| Male and married2 |
| Increasing household income3 |
| Health care worker in family4 |
| Decreases flu shot rates |
| Spanish-speaking5 |
| Lack of health insurance3 |
| African-American1,3 |
| Hispanic1 |
| Living alone6 |
| Not having a driver6 |
| Health Status and Behaviors |
| Increases flu shot rates |
| Non-smoker3 |
| Previous vaccination7 |
| Greater disease burden2 |
| Fair or poor health status3 |
| Vigorous exerciser3 |
| Decreases flu shot rates |
| Previous flu shot side effects3 |
| Cognitive impairment3 |
| Being healthier4,8 |
| Health Service Use |
| Increases flu shot rates |
| Office visit during flu season9 |
| PCP discussed flu shots10 |
| 3+ doctors visits in a year3 |
| Doctor recommendation11,12 |
| VA patient11,13 |
| Decreases flu shots |
| Patient of inner city clinic11,13 |
| Health System Organization |
| Increases flu shot rates |
| Computer reminder to doc14,15 |
| Walk-in vaccine clinics13,16,17 |
| Standing vaccine orders16,17 |
| Mailed patient reminders16–20 |
| Action-oriented pt reminder18 |
| Urban practice19 |