Epidemiologic characteristics of catarrhal media otitis in children of preschool age in some kindergarten in Ha Noi

Study was carried out at some kindergarten with 773 children of 1-5 years old of age. Results showed an incidence of catarrhal media otitis of 10.34%. This incidence trends to increased in the lower age with a peak of 12.21% at the age of 2, then diminished gradually. The gender rate is 53.75% in boys comparing with 46.25% in girls. In 75.60% patients the condition occurred in both sides of two ears and in the case of unilateral development, the rate is 70.27% in the left in comparing with 29.73% in right ear