SGAR and tympanometry were performed on 488 ears from May 27th, 2008 to July 30th, 2008. Exclusion criteria were the presence of tympanic membrane perforation, and/or pressure equalization tubes, noncompliance, otorrhea, external auditory canalstenosis and signs of acute inflammation such as fever or otalgia. In all cases, pneumatic otoscopic examination was conducted and diagnostic accurate rates of OME were calculated in SGAR and tympanogram.