Occupational Hearing Loss, Noise Induced Hearing Loss, Hearing Handicaps

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*Hearing Impairment Calculator - AAO 1979*
			500 Hz	1000 Hz	2000 Hz	3000 Hz
	All frequencies must be filled in with values in dB.	Right Ear
	If hearing threshold is greater than 100 dB enter 100 dB.	Left Ear
	If hearing threshold is less than zero dB enter 0 dB.		Calculate Hearing Impairment
	Patient's age must be greater than 18 yrs to calculate presbycusis.		Calculate Hearing Impairment

Enter Patient's Age at time of Audiogram:

Directions: Age is entered in years. Two decimal points can be entered. To calculate age from the patient's birth date to the audiogram's test date, use the "Find Years From Dates" screen button.