Table 2.

Pure tone averages and air-bone gap preoperatively, and at last follow-up

Patient/Ear	Preoperative BC PTA (dB)	Postoperative BC PTA (dB)	Preoperative AC PTA (dB)	Postoperative AC PTA (dB)	Preoperative ABG (dB)	Postoperative ABG (dB)	Notes
1/Left	10	10	30	10	20	0
2/Left	10	10	20	20	10	10
2/Right	15	15	35	30	20	15
3/Right	10	10	40	35	30	25
4/Left	20	20	40	20	20	0
5/Right	10	10	35	35	25	25
6/Left	30	30	65	60	35	30
7/Right	10	10	45	20	35	10
8/Right	30	30	55	55	25	25
8/Left	30	30	50	70	20	35	BAHA
9/Left	10	10	50	40	40	30
10/Left	10	10	40	40	30	30
11/Right	45	45	45	45	0	0
12/Left	10	10	30	55	20	45
13/Left	40	40	80	80	40	40	BAHA
13/Right	30	30	75	60	45	30
14/Right	10	10	60	60	50	50	BAHA
14/Left	10	10	40	40	30	30
15/Left	40	40	70	65	30	25
16/Right	20	20	60	60	40	40	BAHA

BC: bone conduction; AC: air conduction; PTA: pure tone average; ABG: air-bone gap; BAHA: bone-anchored hearing aid.