Table 2

ORs of confounding factors for the proportion of long-term complications in inpatients with T1DM

	Characteristic		Unadjusted OR (95% CI)	P value	Adjusted OR (95% CI)	P value
Microvascular complication	Gender	Male	1		1
		Female	0.91 (0.89 to 0.94)	<0.001	1.00 (0.96 to 1.03)	0.797
	Age (years)	0–9	1		1
		10–19	4.50 (3.78 to 5.36)	<0.001	4.08 (3.28 to 5.07)	<0.001
		20–29	11.27 (9.51 to 13.35)	<0.001	10.43 (8.44 to 12.88)	<0.001
		30–39	15.22 (12.84 to 18.04)	<0.001	13.42 (10.86 to 16.58)	<0.001
		40–49	18.68 (15.76 to 22.14)	<0.001	15.80 (12.79 to 19.53)	<0.001
		50–59	17.05 (14.39 to 20.21)	<0.001	14.11 (11.42 to 17.44)	<0.001
		60–69	13.94 (11.75 to 16.53)	<0.001	11.04 (8.92 to 13.65)	<0.001
		≥70	8.31 (6.99 to 9.88)	<0.001	6.89 (5.55 to 8.55)	<0.001
	Urban-rural distribution	Urban	1		1
		Rural	0.93 (0.89 to 0.96)	<0.001	0.97 (0.93 to 1.01)	0.096
	Region	Northeast	1		1
		North	0.91 (0.86 to 0.96)	<0.001	0.67 (0.63 to 0.72)	<0.001
		East	0.82 (0.78 to 0.86)	<0.001	0.74 (0.70 to 0.79)	<0.001
		Central	0.83 (0.78 to 0.87)	<0.001	0.75 (0.70 to 0.81)	<0.001
		South	0.69 (0.65 to 0.73)	<0.001	0.64 (0.60 to 0.69)	<0.001
		Northwest	0.74 (0.69 to 0.79)	<0.001	0.69 (0.64 to 0.74)	<0.001
		Southwest	0.85 (0.79 to 0.92)	<0.001	0.76 (0.68 to 0.85)	<0.001
	Hypertension	Without	1		1
		With	1.66 (1.61 to 1.71)	<0.001	1.58 (1.51 to 1.65)	<0.001
	Hyperlipidemia	Without	1		1
		With	1.93 (1.86 to 2.00)	<0.001	1.58 (1.51 to 1.66)	<0.001
Macrovascular complications	Gender	Male	1		1
		Female	0.80 (0.78 to 0.83)	<0.001	0.76 (0.72 to 0.79)	<0.001
	Age (years)	0–9	1		1
		10–19	0.59 (0.46 to 0.75)	<0.001	0.58 (0.44 to 0.78)	<0.001
		20–29	1.72 (1.40 to 2.10)	<0.001	1.64 (1.28 to 2.10)	<0.001
		30–39	3.58 (2.93 to 4.37)	<0.001	3.09 (2.43 to 3.93)	<0.001
		40–49	7.09 (5.82 to 8.62)	<0.001	5.28 (4.16 to 6.70)	<0.001
		50–59	11.56 (9.51 to 14.05)	<0.001	7.19 (5.67 to 9.12)	<0.001
		60–69	14.90 (12.25 to 18.11)	<0.001	9.28 (7.32 to 11.77)	<0.001
		≥70	22.33 (18.36 to 27.16)	<0.001	13.59 (10.71 to 17.25)	<0.001
	Urban-rural distribution	Urban	1		1
		Rural	0.59 (0.57 to 0.62)	<0.001	0.95 (0.89 to 1.00)	0.05
	Region	Northeast	1		1
		North	3.14 (2.95 to 3.35)	<0.001	1.51 (1.39 to 1.64)	<0.001
		East	0.78 (0.73 to 0.83)	<0.001	0.66 (0.61 to 0.72)	<0.001
		Central	0.70 (0.64 to 0.75)	<0.001	0.72 (0.65 to 0.79)	<0.001
		South	0.67 (0.61 to 0.73)	<0.001	0.70 (0.63 to 0.78)	<0.001
		Northwest	0.53 (0.49 to 0.59)	<0.001	0.42 (0.38 to 0.47)	<0.001
		Southwest	1.17 (1.06 to 1.29)	0.001	0.97 (0.84 to 1.13)	0.709
	Hypertension	Without	1		1
		With	4.77 (4.61 to 4.95)	<0.001	2.36 (2.25 to 2.48)	<0.001
	Hyperlipidemia	Without	1		1
		With	2.06 (1.98 to 2.14)	<0.001	1.48 (1.40 to 1.57)	<0.001

The p values in bold mean statistically significant.
T1DM, type 1 diabetes mellitus.