“…The average initial referral rate in these studies was 3.89%. Five studies (107,560 children) had used transiently evoked otoacoustic emissions (TEOAE's) [5,[10][11][12][13], two studies (15,382 children) automated auditory brainstem response (a-ABR) [14,15], while the remaining 13 studies (564,180 children) had used both screening protocols [16][17][18][19][20][21][22][23][24][25][26][27][28]. The numbers of screened children varied from 1,421 [11] to 148,240 [17], whereas the initial referral rate varied from 0.6% [15] to 16.7% [11].…”