Elevated Serum Total Bilirubin Concentrations Are Negatively Associated with Diabetic Retinopathy among the Chinese Northeastern Population

Table 4

Odds ratios (95% CI) for risk of DR according to STBC.

	Model 1		Model 2		Model 3
	OR (95% CI)		OR (95% CI)		OR (95% CI)
Continuous	0.91 (0.89, 0.94)	<0.001	0.93 (0.90, 0.96)	<0.001	0.95 (0.93, 0.99)	0.007
Tertiles
Q1	1.00 (reference)		1.00 (reference)		1.00 (reference)
Q2	0.50 (0.32, 0.78)	0.002	0.46 (0.28, 0.73)	0.002	0.51 (0.30, 0.87)	0.014
Q3	0.23 (0.15, 0.35)	<0.001	0.26 (0.16, 0.41)	<0.001	0.37 (0.22, 0.64)	<0.001

Model 1: unadjusted model; Model 2: adjusted for sex, age, BMI, and duration of diabetes; Model 3: adjusted for the variables in model 2 and SBP, DBP, FPG, HbA1c, TC, TG, HDL-C, LDL-C, BUN, Cr, UA, Fasting insulin, urine microalbumin, C-peptide, and fibrinogen.