Objective. To assess parents' knowledge and opinions about immunizatio
ns and immunization practices before and after introduction of vaccine
information pamphlets. Research design. Telephone questionnaire admin
istered to parents whose children received immunizations in the preced
ing week. Setting. Six private pediatric practices in Nashville area a
nd resident continuity clinic at Vanderbilt University Medical Center.
Participants. Parents whose children were scheduled to receive immuni
zations were asked to participate. Interviews were completed with 177
parents whose children received immunizations before and 156 parents a
fter pamphlets were introduced. These two groups of parents had simila
r demographic characteristics. Results. Parents who received vaccine i
nformation pamphlets learned more about vaccines (2.38 facts/parent af
ter vs 1.18/parent before vaccine information pamphlets, z = -6.28, P
< .0001) and were more eager to obtain immunizations for their childre
n (76% vs 38%, chi(2) = 47,24, P < .001). Receipt of pamphlets did not
make parents significantly more likely to report side effects from va
ccines (63% after vs 55% before, NS) but tended to make them less like
ly to turn to non health care providers for information (58% after vs
69% before, chi(2) = 3.73, P = .06). Parents who received pamphlets, h
owever, said more often that they received too much information (20% v
s 4%, chi(2) = 14.9, P< .001). Conclusions. Vaccine information pamphl
ets enhanced parents' knowledge and acceptance of immunizations. There
is room for further improvement.