TABLE 5.

Results of the multiple logistic regression with interaction terms

Asymmetry variable	OR (95% CI)	p
PTA	1.0391 (1.0048–1.0746)	0.025
WRQ	1.0288 (0.9940–1.0602)	0.064
SIN	1.2321 (1.1004–1.3797)	<0.001
PTA and WRQ interaction	1.0000 (0.9986–1.0005)	0.384
PTA and SIN interaction	0.9968 (0.9918–1.0018)	0.210
WRQ and SIN interaction	0.9989 (0.9972–1.0005)	0.172

Both PTA and QuickSIN SNR asymmetry were significantly predictive of VS. QuickSIN SNR asymmetry was more predictive than PTA asymmetry (higher OR with no overlap in 95% CI). There were no significant interactions between various measures of asymmetry.

CI indicates confidence interval; OR, odds ratio; PTA, pure-tone average; SNR, signal-to-noise ratio; VS, vestibular schwannoma; WRQ, word-recognition in quiet.