Table 3. Interactive effect analysis of obesity and central obesity on elevated urinary albumin-to-creatinine ratio.

Categories		Elevated UACR/n	Un-adjusted		Adjusted*
obesity	Central obesity		OR (95%CI)	P value	OR (95%CI)	P value
(−)	(−)	206/1315	1.00(reference)		1.00(reference)
(−)	(+)	276/1140	1.72(1.41–2.10)	<0.001	1.16(0.94–1.44)	0.175
(+)	(−)	14/86	1.05(1.07–1.99)	0.880	0.86(0.47–1.57)	0.620
(+)	(+)	117/348	2.73(1.83–2.92)	<0.001	1.82(1.36–2.43)	<0.001
Obesity×Central obesity		613/2889	1.52(0.79–2.89)	0.208	1.82(0.94–3.55)	0.078

* Adjusted for age, gender, smoking and alcohol drinking, hypertension, residence, blood glucose, triglyceride and uric acid.