View report page

30
children with hearing defect expeditiously, and it is especially useful in detecting unilateral
defects of the less severe grade which would in all probability be overlooked without its aid.
The results of the examination of 4,061 children are here recorded in graph form.
Fig. 3 indicates the percentage of passes and failures of boys, girls and all children in three
separate groups.
Fig. 4 shows the same thing in " ears " instead of children.
Fig. 5 shows the hearing acuity for all ears by groups. These are divided into four
groups :—(1) —3 to +6, which represents all the passes, (2) a separate group of the +9, this
group being what may be described as the " border-line failure group," (3) 12 to 18, and
(4) 21 to 30.