Table 1.

Mean audiometric thresholds and corresponding ranges for the three listener groups.

		Left ear						Right ear
		250 Hz	500 Hz	1 kHz	2 kHz	4 kHz	8 kHz	250 Hz	500 Hz	1 kHz	2 kHz	4 kHz	8 kHz
YNH	Mean audiometric threshold (dB HL)	6.43	6.07	7.14	9.29	7.86	6.07	7.86	7.86	7.14	7.86	6.43	7.14
	Range (dB HL)	0–20	0–20	−5–20	0–25	−5–20	−5–25	5–15	5–20	0–25	−5–20	0–15	0–15
ONH	Mean audiometric threshold (dB HL)	9.12	9.41	8.82	7.94	20.88	24.71	11.18	10.00	9.12	10.00	16.18	26.18
	Range (dB HL)	0–25	0–20	0–20	−5–25	0–60	0–75	5–20	5–15	0–15	0–25	5–35	10–75
OHI	Mean audiometric threshold (dB HL)	15.33	22.33	23.67	27.33	40.00	46.67	18.00	23.33	20.33	26.00	38.00	42.00
	Range (dB HL)	5–30	10–45	10–40	5–45	10–60	20–80	10–35	10–35	10–35	10–50	10–65	10–80