Table 2. Results of sonotubometry in each group

	Normal (SD)	PET (SD)	ETD (SD)	p-value
Sonotubometry opening duration time (ms)	379.80 (130.280)	567.47 (378.186)	115.12 (152.948)	<0.001
Sonotubometry decibel elevation (dB)	17.402 (8.075)	21.262 (9.648)	5.884 (8.279)	<0.001

SD: standard deviation, PET: patulous eustachian tube dysfunction, ETD: dilatory eustachian tube dysfunction.