title: Point prevalence of secretory otitis media in children in southern Vietnam.
abstract: Few reliable data exist on the prevalence of secretory otitis media (SOM) in the Third World. A large epidemiologic cross-sectional study was undertaken in two communes in southern Vietnam to study an urban and a rural community during two different climatic conditions: the dry and rainy seasons. The participants included 3,300 children (6,598 ears) ages 6 months to 10 years. Otolaryngological and medical histories were obtained, and an otolaryngological examination was carried out on 1,669 children in April 1995 (the dry season) and on 1,631 children in December 1995 (the rainy season). Tympanograms were obtained (n = 6,055), 429 of which were type B curves. The overall prevalence of SOM was 7.1%, the highest incidence was at the age of 2 years (with a prevalence of 22%), and there was a significantly higher prevalence of SOM during the rainy season than during the dry season. No significant difference in incidence was found in the urban district as compared to the rural district.
authors.affiliation: Department of Otolaryngology, Pediatric Hospital No. 1, Ho Chi Minh City, Vietnam.
authors.forename: H S
authors.initials: HS
authors.lastname: Dang
authors.forename: T S
authors.initials: TS
authors.lastname: Nhan
authors.forename: T
authors.initials: T
authors.lastname: Le
authors.forename: K P
authors.initials: KP
authors.lastname: Tran
authors.forename: T T
authors.initials: TT
authors.lastname: Tran
authors.forename: M T
authors.initials: MT
authors.lastname: Vu
authors.forename: V
authors.initials: V
authors.lastname: Balle
authors.forename: M
authors.initials: M
authors.lastname: Tos
mesh_terms: D000158:Acoustic Impedance Tests; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003906:Developing Countries; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010034:Otitis Media with Effusion / Q000453:epidemiology* / Q000209:etiology; D012307:Risk Factors; D012424:Rural Population / Q000706:statistics & numerical data*; D012621:Seasons; D014505:Urban Population / Q000706:statistics & numerical data*; D014744:Vietnam / Q000453:epidemiology