Table 3. Odds Ratios (95% confidence interval [CI]) for Influenza Vaccination stratified by Black and White KPMAS patients.
| White | Black | ||
|---|---|---|---|
| Odds Ratio (95% CI) | Odds Ratio (95% CI) | Reference Category | |
| Age (per 10 years) | 1.49 (1.48, 1.51) | 1.42 (1.41, 1.44) | — |
| Female | 1.20 (1.17, 1.24) | 1.15 (1.12, 1.18) | Male |
| Service Area | |||
| Greater Baltimore area | 1.16 (1.10, 1.21) | 1.24 (1.17, 1.31) | Northern Virginia |
| District of Columbia | 1.06 (1.00, 1.13) | 0.89 (0.85, 0.94) | Northern Virginia |
| Suburban Maryland | 1.18 (1.13, 1.22) | 0.94 (0.90, 0.98) | Northern Virginia |
| Current smoker | 0.67 (0.63, 0.72) | 0.84 (0.80, 0.88) | Non-current smoker |
| Registered on KP patient portal | 1.79 (1.71, 1.87) | 1.46 (1.42, 1.50) | Not registered on KP.org |
| Neighborhood median income (per $10,000) | 1.03 (1.03, 1.03) | 1.02 (1.01, 1.02) | — |
| Miles to nearest medical center (per mile) | 0.98 (0.97, 0.98) | 0.99 (0.99, 0.99) | — |
| CCI = 1 | 1.49 (1.43, 1.55) | 1.69 (1.63, 1.75) | CCI = 0 |
| CCI ≥ 2 | 1.92 (1.83, 2.01) | 2.46 (2.38, 2.56) | CCI = 0 |
| Discordant Patient/provider race | 0.93 (0.91, 0.96) | 1.20 (1.17, 1.23) | Concordant Patient/provider race |
KPMAS = Kaiser Permanente Mid-Atlantic States; CCI = Charlson Comorbidity Index