Affinity
2.0
Additional Information Page 60
What does my ANL value mean?
On performing the ANL test you will obtain an ANL value (in dB) and a percentage. The percentage gives a
likelihood of success with amplification (Nabalek et al., 2006) and the ANL value is the outcome of the
following calculation:
ANL = MCL -BNL
For response categories the following outcome criteria was determined as an effect of the Nabalek et al.
(2006) investigation into ANL outcomes in relation to amplification:
ANL Score 7 dB or less: These individuals have a great prognosis for regular use and acceptance of
hearing aids; may not need as much follow-up counseling and guidance as the average patient.
ANL Score 8-12 dB: These are your more common patients and have a good (8) or bad (12)
prognosis for regular use and acceptance of hearing aids. These patients may need more follow-up
counseling and are excellent candidates for noise reduction technologies.
ANL Score 13 dB or more: These patients are “at risk” for reduced utilization of hearing aids and may
need additional post-fitting counseling, guidance, and require noise reduction technologies.
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