Two-level screening audiometry in public school.

@article{Hattori1989TwolevelSA,
  title={Two-level screening audiometry in public school.},
  author={Hideji Hattori},
  journal={Auris, nasus, larynx},
  year={1989},
  volume={16 Suppl 1},
  pages={S15-21}
}
The two-level screening audiometry has been performed every year since 1980 in Kobe City. The method is as follows. When a child fails to respond to 30 dB at 1 kHz or 25 dB at 4 kHz, he is tested at a level 20 dB higher. Thus one can obtain more information as to the grade and type of the hearing impairment of a child than by the usual one-level screening… CONTINUE READING