Table 2.

Crude and adjusted hazard ratios (95% confidence interval) of SSNHL in depression (study I) and depression in SSNHL (study II).

Characteristics	HRs
	Crude†	P-value	Adjusted†‡	P-value
Study I
Depression	1.29 (1.14–1.47)	<0.001*	1.16 (1.02–1.31)	0.023*
Control	1.00		1.00
Study II
SSNHL	1.42 (1.17–1.72)	<0.001*	1.29 (1.06–1.57)	0.010*
Control	1.00		1.00

*Cox-proportional hazard regression model, Significance at P Co0.05.

^†Stratified model for age, sex, income, and region of residence.

^‡Adjusted model for Charlson Comorbidity Index.