. Author manuscript; available in PMC: 2018 May 1.

Published in final edited form as: Ear Hear. 2017 May-Jun;38(3):e142–e160. doi: 10.1097/AUD.0000000000000399

Table 1.

Mean peak-to-tail tympanometric absorbance differences for either the positive tail (+200 daPa) or the negative tail (−300 daPa) pressure conditions for downswept (A_tD) and upswept (A_tU) tympanograms.

Condition			Absorbance Measure

Frequency Band	Sweep Condition	Tail Pressure (daPa)	Mean Peak-to-Tail Difference	SE	Mean Peak -to-Tail Difference Test-retest	SE
Low Pass
	A_tD	+200	0.41	0.01	0.04	0.01
	A_tU	+200	0.41	0.01	0.04	0.01
	A_tD	−300	0.44	0.01	0.04	0.01
	A_tU	−300	0.46	0.01	0.04	0.01
High pass
	A_tD	+200	−0.06	0.01	0.03	0.00
	A_tU	+200	−0.08	0.01	0.03	0.01
	A_tD	−300	0.05	0.01	0.04	0.00
	A_tU	−300	0.04	0.01	0.04	0.00

Results are shown for downswept and upswept tympanograms averaged over a low-frequency pass band (0.376 to 2.0 kHz) or high-frequency pass band (2.0 to 8.0 kHz). The data were averaged over single sessions for 57 ears. A positive value indicates that the peak of the frequency-averaged absorbance tympanogram was greater than the tail. Also shown are the mean absolute value of the test-retest differences for peak-to-tail-differences and SEs for 45 ears with two tests performed about one month apart.