Table 4.

The relationship between WWI index and DKD risk.

DKD	OR (95%CI), P value
	Non-adjusted model 1	Adjusted model 2	Adjusted model 3
Continuous
Weight	1.00 (1.00, 1.00), 0.251	1.00 (1.00, 1.00), 0.163	1.00 (0.99, 1.00), 0.397
WC	1.00 (1.00, 1.01), 0.010	1.01 (1.00, 1.01), <0.001	1.00 (0.99, 1.01), 0.445
WWI index	1.44 (1.33, 1.56), <0.001	1.36 (1.24, 1.48), <0.001	1.32 (1.12, 1.56), <0.001
Categories
Quartile 1	1.00	1.00	1.00
Quartile 2	1.19 (1.01, 1.40), 0.043	1.08 (0.91, 1.28), 0.393	1.21(0.91, 1.62), 0.196
Quartile 3	1.41 (1.20, 1.67), <0.001	1.24 (1.04, 1.47), 0.016	1.31 (0.97, 1.76), 0.078
Quartile 4	1.89 (1.61, 2.22), <0.001	1.65 (1.38, 1.97), <0.001	1.47 (1.06, 2.04), 0.021
P for trend	<0.001	<0.001	0.021

OR, odds ratio.

95% CI, 95% confidence interval.

Adjusted model 2: age, gender, and race were adjusted.

Adjusted model 3: additionally adjusted for annual household income, education level, moderate physical activity, smokers, hypertension, cardiovascular disease, BMI, ALT, AST, GGT, FPG, glycohemoglobin, TG, TC, HDL-c, LDL-c, BUN, SUA, and Scr.