Results; BUA of male is 63.87 dB/MHz,formulation-weight =189.1417 + 0. 2062BUA-0.0224SOS,BUA of female is 58.9 dB/ MHz,BUA of every year group is accord with reference data,statistical is no significant.

• 结果:本文男性平均BUA为63.；87dB/MHz；得出回归公式:体重=189