Table 4. The multivariable logistic regression analyses of the high serum interleukin 6 level (≥4.475 pg/mL) and the acute urinary retention in elderly men with benign prostatic hyperplasia.

Assessment	Beta	Odds ratio	95% CI	P value
Univariate analysis	2.024	7.567	4.214–13.588	<0.001
Model 1†	2.095	8.127	4.473–14.763	<0.001
Model 2‡	2.103	8.188	4.315–15.537	<0.001
Model 3§	2.269	9.666	4.347–21.491	<0.001

^†, Model 1: adjusted for albumin (Alb) and triglycerides (TG); ^‡, Model 2: based on Model 1, further adjusted for total prostate-specific antigen (t-PSA), free prostate-specific antigen (f-PSA), free to total prostate-specific antigen ratio (f/t-PSA), prostate-specific antigen density (PSAD), and transitional zone index (TZI); ^§, Model 3: based on Model 2, additionally adjusted for maximum flow rate (Qmax) and detrusor pressure at maximum flow rate (PdetQmax).