TABLE 4.

DPOAE variables according to hearing change across all visits

	No Hearing Change					Hearing Change
	N†	Mean	SD	Min	Max	N†	Mean	SD	Min	Max	p*
Difference in the sum of the inputs
FD	56	13.6	126.5	−270.1	343.7	42	110.3	170.2	−176.4	438.5	0.04
FD − 1	72	19.7	110.7	−295.1	335.2	44	30.6	101.2	−355.2	302.0	0.38
FD − 2	69	29.8	121.3	−289.1	301.9	39	27.6	86.8	−139.3	317.2	0.67
FD − 3	66	25.5	144.6	−346.8	376.1	32	14.7	97.4	−100.6	335.6	0.40
Difference in the sum of the outputs
FD	56	−0.02	0.15	−0.68	0.23	42	0.15	0.13	−0.19	0.39	<0.01
FD − 1	72	0.003	0.17	−0.37	0.49	44	0.09	0.29	−1.63	0.43	0.24
FD − 2	69	0.09	0.28	−0.68	1.19	39	0.09	0.43	−0.89	1.63	0.76
FD − 3	66	0.13	0.44	−0.95	1.31	32	0.13	0.82	−0.58	3.25	0.60
Difference in the sum of the SNRs
FD	56	−1.81	11.37	−57.87	10.74	42	6.19	5.26	−3.69	14.30	0.03
FD − 1	72	0.02	8.56	−43.53	22.69	44	0.00	6.34	−19.19	13.14	0.25
FD − 2	69	0.43	6.93	−15.42	17.03	39	−0.63	9.51	−23.01	22.26	0.35
FD − 3	66	2.37	13.86	−64.50	37.56	32	−2.83	17.26	−30.60	43.69	0.28

^*p value from GEE logistic regression model coefficients.

^†N is patient-ear visits.