Rates of Influenza and Tdap Vaccination in Teaching and Private Obstetrical Practices, and the Influence of Vaccine Hesitancy

Abstract

We evaluated differences in vaccination rates of patients of teaching and private practices, and explored the rate of vaccine hesitancy in pregnant women. This was a cross-sectional study of a convenience sample of recently delivered women. Women completed a survey, which included a question about whether they received the influenza and/or Tdap vaccine, and a vaccine hesitancy scale for both influenza and Tdap vaccines. We also reviewed prenatal records to confirm vaccine administration and collected demographic data. Patients who received care on the teaching service (care by residents supervised by faculty) were compared with those who received care from 26 private practitioners in nine groups. The primary outcome was rate of vaccination. Fisher's exact test was performed to compare groups. Of the 231 women approached, 208 (90.0%) agreed to participate. Of the 208 participants, 70 (33.7%) had prenatal care with a teaching practice, and 138 (66.3%) with a private practice. Patients of teaching practices had a higher influenza and Tdap vaccination rate compared with patients of private practices (Influenza: 70% versus 54.3%, p = 0.036; Tdap: 77.1% versus 58.4%, p = 0.009). Among the entire cohort, 55.3% had some degree of vaccine hesitancy. This did not differ between teaching and private practices (54.3% versus 55.8%, p = 0.883). In spite of similar prevalence of vaccine hesitancy, pregnant women cared for in teaching practices had higher vaccination rates than those cared for in private practices.