Objectives. To investigate maternal knowledge and attitudes about otit
is media (OM) risk, to estimate the prevalence of risk factors in the
first year of life, and to identify barriers to the reduction of risk
factors leg, formula feeding, day care attendance, and exposure to pas
sive smoke). Methods. Questionnaires mailed to a systematic sample of
504 Minnesota women greater than or equal to 18 years old identified t
hrough 1994 birth certificates. Results. Eighty percent returned a com
pleted survey. According to maternal report, 29% of infants (age 8 to
13 months) had recurrent OM (greater than or equal to 3 episodes) and
2% had tympanostomy tubes. Forty-six percent attended day care, 29% ha
d greater than or equal to 1 smoking parent, and 49% breastfed for les
s than or equal to 2 months. Women were more knowledgeable-about OM si
gns and symptoms than about risk factors. Mean OM knowledge score (the
sum of correct true-false responses) was 7.0 (standard deviation = 1.
6). Using multiple linear regression, knowledge score was significantl
y related to marital status, education, age, area of residence, breast
feeding (months), and number of cigarettes smoked per day by the mothe
r, but not to infant or sibling OM history or day care attendance (R-2
=.23). Infant history of OM (odds ratio, 1.9; 95% confidence interval
, 1.1 to 3.2) and white race (odds ratio, 0.3; 95% confidence interval
, 0.1 to 0.8), but not the presence of risk factors, were significantl
y related to having received clinicians' advice about OM prevention ad
vice. Conclusion. OM education and prevention programs should target p
regnant women and new mothers with OM risk factors, and Chose who are
young, single, and less educated.