Table 1 Analysis of prevalence and risk factors for single diseases(partial).

Feature	N (%)	DPN (%)	P value	DPVD (%)	P value	Hypertension (%)	P value	Fatty Liver	P value	DN (%)	P value
Gender			0.002		0.322		0.029		0.644		< 0.001
Male	3514(60.2)	3140(89.4)		2824(80.4)		1596(45.4)		1293(36.8)		1234(35.1)
Female	2324(39.8)	2134(91.8)		1843(79.3)		1123(48.3)		869(37.4)		712(30.6)
Age			< 0.001		< 0.001		< 0.001		< 0.001		< 0.001
18 ~ 44	726(12.4)	538^a(74.1)		277^a(38.2)		115^a (15.8)		399^a (55.0)		150^a (20.7)
45 ~ 54	1155(19.8)	1014^b(87.8)		866^b(75.0)		401^b (34.7)		475^b (41.1)		343^b (29.7)
55 ~ 64	1930(33.1)	1790^c(92.8)		1648^c(85.4)		883^c(45.8)		700^c (36.3)		619^b (32.1)
65~	2027(34.7)	1932^d(95.3)		1876^d(92.6)		1320^d (65.1)		588^d (29.0)		834^c (41.1)
BMI			< 0.001		< 0.001		< 0.001		< 0.001		0.056
Lean	366(6.3)	342^a(93.4)		291^a(79.5)		106^a(29.0)		26^a(7.1)		140(38.3)
Normal	3076(52.7)	2812^a(91.4)		2536^a(82.4)		1364^b(44.3)		839^b(27.3)		1038(33.8)
Overweight	1740(29.8)	1559^a(89.6)		1391^a(79.9)		886^c(50.9)		876^c(50.3)		554(31.8)
Obese	656(11.2)	561^b(85.5)		449^b(68.5)		363^c(55.3)		421^d(64.2)		214(32.6)
Marital status			< 0.001		< 0.001		0.040		0.165		0.209
Married	5446(93.3)	4963(91.1)		4420(81.2)		2556(46.9)		2004(36.8)		1804(33.1)
Others	392(6.7)	311(79.3)		247(63.0)		163(41.6)		158(40.3)		142(36.2)
Total	5838(100)	5274(90.3)		4667(79.9)		2719(46.6)		2162(37.0)		1946(33.3)

DPN: diabetic peripheral neuropathy; DPVD: diabetic peripheral vascular disease; DN: diabetic nephropathy; Others in marital status include divorced, widowed, unmarried, and unknown marital status. Superscripts a, b, c, d are used to indicate significant differences between groups. If two groups have different superscripts, it means there is a significant difference between them (To control the errors caused by multiple comparisons, we adopted the Bonferroni correction method, dividing the original significance level (α = 0.05) by the number of tests to obtain the corrected threshold α′ =0.05/6 = 0.0083).

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