Document ID: chunk:federal_register_of_legislation:F2016L01332:reg:3d:p9
Version: federal_register_of_legislation:F2016L01332
Segment Type: reg
Provision Reference: reg 3D (pt 9/13)
Character Range: 245251–247632

the following formula:

                           (A - B) x 100
               Conductive PLH =     100 - B

 (where "A" is air conduction PLH, and "B" is bone conduction PLH).

 No adjustment for age is to be applied to the results of applying the formula. That result is the age adjusted PLH for left conductive deafness.

        Go to -> Step 5 (on page 147).

 Method 2 (to be applied if only air conduction HTLs are available and if it is not practicable or appropriate to obtain bone conduction HTL values as a result  of any of the reasons described on page 132).

 PLH is to be calculated using left air conduction HTL values and taking the right air conduction HTL values all to be zero. The formula is not applied and so age adjustment is required.

        Go to -> Step 4 (on page 145).

 Scale 7.1.3
500 Hz

 APHL may be age adjusted

                Values of percentage of loss of hearing corresponding to given hearing threshold levels in the better and worse ear at 500 Hz

                              HTL - Better ear

    15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
15 0.0
 20 0.4 0.6
 25 0.6 1.0 1.4
 30 1.0 1.4 2.0 2.8
 35 1.3 1.8 2.5 3.4 4.5
 40 1.7 2.2 3.0 3.9 5.1 6.4
 45 2.0 2.6 3.4 4.3 5.5 6.8 8.1
 50 2.3 2.9 3.7 4.7 5.8 7.1 8.4 9.7
 55 2.5 3.2 4.0 5.0 6.1 7.3 8.6 9.9 11.2
 60 2.7 3.4 4.2 5.2 6.3 7.5 8.8 10.0 11.3 12.6
 65 2.8 3.5 4.4 5.4 6.5 7.7 8.9 10.2 11.5 12.7 14.0
 70 2.9 3.7 4.5 5.5 6.6 7.8 9.1 10.3 11.6 12.9 14.2 15.5
 75 3.0 3.8 4.7 5.7 6.8 8.0 9.2 10.5 11.8 13.1 14.5 15.7 16.9
 80 3.1 3.9 4.8 5.8 6.9 8.1 9.3 10.6 12.0 13.3 14.7 16.0 17.2 18.2
 85 3.2 4.0 4.9 5.9 7.0 8.2 9.4 10.7 12.1 13.5 14.9 16.2 17.4 18.4 19.1
 90 3.4 4.1 5.0 6.0 7.1 8.3 9.5 10.8 12.2 13.6 15.0 16.3 17.6 18.5 19.2 19.7
95 3.4 4.2 5.1 6.1 7.1 8.3 9.5 10.8 12.2 13.6 15.0 16.4 17.6 18.6 19.3 19.7 20.0
    15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95

                    Note: the worse ear is the one with the higher value HTL!

 Scale 7.1.4
1000 Hz

Values of percentage of loss of hearing corresponding to given hearing threshold levels in the better and worse ear at 1000 Hz

              HTL - Better ear

      15   20    25    30    35    40     45     50     55     60     65     70     75     80     85     90     95
      0.0
15
 20   0.5   0.8
 25   0.8   1.2   1.8
 30   1.2   1.7