TABLE 5.

Regression coefficients for the multivariate discriminant function

Variable	β	SE	p*
SRO average threshold†	−3.352	1.174	0.01
	−3.504	1.136	0.01
Cumulative dose	0.017	0.004	<0.01
	0.018	0.004	<0.01
SRO average threshold† × dose	0.013	0.004	0.03
	0.014	0.003	0.01
I:FD	0.006	0.002	<0.01
	0.007	0.002	<0.01
O:FD	−0.606	4.143	0.861
SNR:FD	0.078	0.104	0.422

Bold, italicized numbers indicate results for the optimal multivariate discriminant function that was selected by backward elimination.

^*p value from GEE logistic regression model coefficients.

^†Reciprocal of “SRO Average Threshold” and standardized to a mean of 0 and SD of 1.

^1,2Indicates order in which DPOAE metrics were removed from model.