TABLE 1.

DPOAE measurements before and after tracheotomy

	Fr 1	Fr 2	Fr 3	Fr 4	Fr 5	Fr 6	Fr 7	Fr 8	Fr 9	Fr 10
	1019.5 Hz	1605.5 Hz	2027.3 Hz	2566.4 Hz	3210.9 Hz	4054.7 Hz	5121.1 Hz	6445.3 Hz	8003.9 Hz	10078.1
DPOAE before tracheotomy	2.68±0.87	3.88±1.57	4.28±3.03	6.54±2.41	9.98±2.5	14.86±2.52	19.76±4.47	24.3±3.79	27.84±5.97	33.18±4.89
DPOAE after tracheotomy	2.86±0.98	4.18±1.82	4.52±3.37	6.42±2.04	10.38±2.55	15.22±3.02	19.8±4.07	25.06±4.56	28.8±6.28	32.18±5.62

SEM: Standard error error of mean; DPOAE: Distortion-product otoacoustic emissions.