TABLE 3

Attitudes and Beliefs of Study Participants According to Study Group at the Pretest and Posttest

Treatment GroupVaccines Are Safe, % (95% CI)I Am Confident in the Safety of Routinely Recommended Vaccines, % (95% CI)Multiple Vaccines at Once Do not Overload the Immune System, % (95% CI)If I Vaccinate My Child, He or She Will Probably not Have a Serious Adverse Effect, % (95% CI)Vaccines Are Necessary to Prevent Certain Diseases, % (95% CI)
Prenatal
    At screening77 (66–86)73 (62–83)a62 (50–72)a46 (35–58)92 (84–97)
    After intervention94 (86–98)92 (84–97)a90 (82–95)a45 (34–57)99 (93–100)
1 wk
    At screening80 (69–88)a73 (62–83)a50 (38–60)a21 (13–32)a97 (91–100)
    After intervention97 (91–100)a99 (93–100)a80 (69–88)a52 (40–64)a93 (85–98)
2 mo
    At screening89 (78–95)85 (74–93)56 (42–68)a23 (13–36)93 (84–98)
    After intervention95 (86–99)92 (82–97)82 (70–91)a34 (23–48)93 (84–98)
  • The all-time-points group was analyzed separately. Results: Vaccines are safe, at screening = 98% (90–100), after intervention = 98% (95% CI: 90–100); I am confident in the safety of routinely recommended vaccines: at screening = 96% (95% CI: 87–100), after intervention = 96% (95% CI: 87–100); Multiple vaccines at once do not overload the immune system: at screening = 96% (95% CI: 87–100), after intervention = 100% (95–100); If I vaccinated my child, he/she will probably not have a serious side effect: at screening = 38% (95% CI: 25–52), after intervention = 49% (95% CI: 35–63); and Vaccines are necessary to prevent certain diseases: at screening = 98% (95% CI: 90–100), after intervention = 98% (95% CI: 90–100). CI indicates confidence interval.

  • a Statistically significant.