Table 3.

Multiple logistic regression analysis

	Odds ratio (95% CI)	P value
Age (years)		<0.001
≤40	1.000
41–50	1.787 (1.047–3.049)	0.033
51–60	2.679 (1.550–4.630)	<0.001
>60	3.867 (2.133–7.011)	<0.001
Diabetes duration (years)
≤5	1.000	0.744
6–10	0.855 (0.585–1.249)	0.417
11–15	0.966 (0.607–1.538)	0.966
>15	1.147 (0.620–2.122)	0.662
Hypertension (yes vs. no)	1.196 (0.857–1.667)	0.292
Smoking (yes vs. no)	1.173 (0.763–1.804)	0.466
Retinopathy (yes vs. no)	1.513 (1.028–2.226)	0.036
Diabetic nephropathy (yes vs. no)	1.515 (1.031–2.228)	0.035
Mean A1C (%)		0.001
≤7.0	1.000
7.01–9.0	1.138 (0.898–2.134)	0.141
9.01–11.0	2.565 (1.526–4.312)	<0.001
>11.0	2.752 (1.075–7.048)	0.035