Table 3.
Multivariable analysis of maternal predictors of not receiving antepartum Tdap vaccination
| Characteristic | Adjusted ORa for not being vaccinated (95% CI) | p-value* |
|---|---|---|
| Race/Ethnicity | 0.0001 | |
| White non-Hispanic | – | |
| Black non-Hispanic | 1.74 (1.07–2.83) | |
| Asian non-Hispanic | 0.85 (0.53–1.35) | |
| Hispanic | 2.44 (1.54–3.88) | |
| All other non-Hispanic | 0.80 (0.41–1.54) | |
| Health insurance type | 0.08 | |
| Any private | – | |
| Public, no private | 1.42 (0.96–2.12) | |
| Did anyone at your OB/GYN office recommend you receive the Tdap vaccine DURING this most recent pregnancy? | 0.0003 | |
| No | – | |
| Yes | 0.39 (0.23–0.65) | |
| Did your OB/GYN offer to give you the vaccine in their office? | < 0.0001 | |
| No | – | |
| Yes | 0.24 (0.15–0.37) | |
| Did you receive any written materials in your OB/GYN office describing the importance of the Tdap vaccine during your pregnancy? | < 0.0001 | |
| No | – | |
| Yes | 0.44 (0.30–0.64) | |
| It is dangerous for pregnant women to get vaccines | 0.045 | |
| Disagree | – | |
| Agree | 1.68 (1.01–2.77) | |
| I generally do what my OB/GYN provider recommends | 0.005 | |
| Disagree | – | |
| Agree | 0.49 (0.30–0.80) | |
| Pregnant women should get the Tdap (pertussis) vaccine | < 0.0001 | |
| Disagree | – | |
| Agree | 0.17 (0.09–0.33) | |
| I worry about the safety of the Tdap (pertussis) vaccine | 0.009 | |
| Disagree | – | |
| Agree | 1.59 (1.12–2.24) | |
Dashed boxes are referent values
*p-value is based on Wald Chi-square test from logistic regression
aAdjusted odds ratio (OR) > 1 reflects elements associated with increased odds of not receiving antepartum Tdap, while OR < 1 demonstrates decreased odds of non-receipt (i.e., more likely to receive antepartum Tdap vaccine)