Table 4. Binary logistic regression analysis of the relationship between 2hPG-FPG and CKD.

		HbA1c (%) <7		HbA1c (%) ≥7
Models	Independent variable	Odds ratio (95% CI)	P-value	Odds ratio (95% CI)	P-value
Model 1	2hPG-FPG, mg/dl
	Group 1 (0–72)	1 (reference)		1 (reference)
	Group 2 (72–108)	1.292 (0.509–3.279)	0.589	1.385 (0.611–3.138)	0.435
	Group 3 (108–144)	0.762 (0.232–2.508)	0.655	2.339 (1.094–4.999)	0.028
	Group 4 (≥144)	0.472 (0.058–3.852)	0.483	3.298 (1.577–6.895)	0.002
Model 2	2hPG-FPG, mg/dl
	Group 1 (0–72)	1 (reference)		1 (reference)
	Group 2 (72–108)	0.862 (0.266–2.788)	0.804	1.448 (0.589–3.558)	0.420
	Group 3 (108–144)	0.364 (0.088–1.511)	0.164	2.397 (1.038–5.534)	0.041
	Group 4 (≥144)	0.200 (0.017–2.325)	0.198	3.662 (1.575–8.514)	0.003
Model 3	2hPG-FPG, mg/dl
	Group 1 (0–72)	1 (reference)		1 (reference)
	Group 2 (72–108)	0.812 (0.233–2.832)	0.743	1.220 (0.477–3.120)	0.678
	Group 3 (108–144)	0.330 (0.068–1.606)	0.170	2.076 (0.874–4.929)	0.098
	Group 4 (≥144)	0.240 (0.020–2.878)	0.260	2.640 (1.083–6.436)	0.033
	HbA1c, per % unit	0.717 (0.232–2.222)	0.565	1.295 (1.096–1.529)	0.002

Model 1: not adjusted; Model 2: adjusted for age, gender, BMI, systolic BP and diastolic BP; Model 3: Model 2 plus Log (fasting insulin), cholesterol, Log (triglyceride), drinking and smoking.