TABLE 3

Predictors of Influenza Immunization During the 2003 to 2004 Influenza Season (n = 316)

FactorUnadjusted Odds Ratio (95% CI)Adjusted Odds Ratio (95% CI)
Increasing child age, mo0.95 (0.89–1.02)
Child race/ethnicity
    WhiteReference
    Hispanic0.30 (0.14–0.65)
    Black0.87 (0.24–3.17)
    Other0.87 (0.24–3.17)
Education of parent/guardian
    College graduate or moreReferenceReferencea
    Some college0.24 (0.13–0.45)0.30 (0.14–0.68)a
    High school graduate or less0.44 (0.17–1.12)0.58 (0.18–1.86)a
Preseason intention to immunize
    Planned to immunizeReferenceReference
    Was undecided/not sure0.42 (0.16–1.08)0.31 (0.10–0.95)
    Planned not to immunize0.11 (0.04–0.25)0.07 (0.02–0.22)
Increase in perception that vaccination is social normb1.51 (1.20–1.91)1.99 (1.44–2.75)
Media exposure
    Heard about Colorado influenza outbreak2.12 (0.71–6.35)
    Heard about local vaccine shortages2.17 (0.79–5.99)
    Heard that young children should be immunized1.97 (0.86–4.54)
Perceived barriers to immunizationb0.35 (0.24–0.52)0.40 (0.24–0.66)
Received recall letterc1.11 (0.63–1.97)0.85 (0.40–1.82)
Provider recommended vaccination8.12 (4.35–15.14)3.87 (1.84–8.15)
Parent vaccinated in 2003–20043.25 (1.80–5.84)
  • CI indicates confidence interval.

  • a Education of parent/guardian was significant overall in multivariate analyses; therefore, all 3 categories of education were retained in the multivariate analyses presented.

  • b Composite scales; odds ratios represent the odds of immunization with each 1-point increase on a 4-point scale.

  • c This factor, although not significant at P < .05, was retained in multivariate analyses because of the potential impact of recall letters on parental attitudes and immunization.