Objective To explore the effects of different probe tone and tympanometric admittance measurement methods on the diagnose of otitis media prediction,and to provide a clinical reference for the selection of probe tones and measurement method to apply to newborn infants.Methods Tympanograms with 226Hz and 1 000Hz probe tones were obtained from normal infants(142ears)and infants with otitis media(90ears).Mean values,standard deviations,the 90%range and 95% mean confidence interval were recorded as the variable...