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Conclusions
Although exposure to infectious agents and parental smoking are known to influence the overall risk of otitis media, these risk factors do not appear to be linked with the tendency to develop chronic otitis media with effusion (COME) instead of recurrent acute otitis media (RAOM). The genetic inflammatory response type of the child appears to influence the risk of persistent middle ear effusion in COME.
Objective
Two different clinical presentations of childhood otitis media are encountered: RAOM; and COME, which is associated with persistent effusion in the middle ear. The objective of this study was to assess putative factors that may regulate the development of persistent middle ear effusion in COME.
Material and methods
In total, 159 children with RAOM and their parents (n=304), and 55 children with COME and their parents (n=110) were evaluated. All the children with COME or RAOM were aged <4 years.
Results
There was no difference in the frequency of attendance at day care outside the home, number of siblings or parental smoking between children with RAOM and those with COME. The frequency of parental allergy and asthma was lower among children with COME than those with RAOM.