The odds ratio and 95% confidence interval for the protection provided by influenza vaccination during pregnancy on laboratory-confirmed influenza hospitalizations among infants for unadjusted and adjusted models.
Model 1 includes study year, site, race and ethnicity, gender, age group and timing in influenza season.
Model 2 includes model 1, prematurity and high-risk medical conditions.
Model 3 includes model 1, smoke exposure, daycare, any breast feeding, siblings and insurance status.