TABLE 8.

Multiple linear regression analysis of factors affecting CT value and hearing loss (n = 128).

Dependent variable	Influencing factors	Regression coefficient (β)	Standardized coefficient	95% CI	T-value	P-value
Basal turn CT value
	Constant term	1823.714	−		14.892	< 0.001
	Disease duration (years)	−11.284	−0.392	−16.695∼-5.873	−4.127	< 0.001
	Age (years)	−7.693	−0.298	−12.181∼-3.205	−3.284	0.001
	Age at initial treatment (years)	5.827	0.231	1.424∼10.230	2.614	0.010
	CSOM type (cholesteatoma)	−48.326	−0.273	−79.504∼-17.148	−3.045	0.003
Bone conduction hearing threshold (4 kHz)
	Constant term	16.738	−		5.824	< 0.001
	Baseline CT value (Hu)	−0.018	−0.427	−0.025∼-0.011	−4.892	< 0.001
	Disease duration (years)	0.517	0.384	0.276∼0.758	4.263	< 0.001
	Age (years)	0.284	0.226	0.093∼0.475	2.937	0.004
	CSOM type (cholesteatoma)	6.194	0.271	2.300∼10.088	3.128	0.002