Table 3.

Predictors for retinopathy by logistic regression analysis

Variable	Group A: duration of type 2 diabetes 20–30 years		Group B: duration of type 2 diabetes 10–12 years
	OR ( 95% CI)	P	OR (95% CI)	P
Model 1
Age diagnosed (years)
<45	1.9 (1.1–3.6)	0.04	1.8 (1.2–2.7)	0.0003
45–55	1.1 (0.6–2.1)	0.8	2.2 (1.6–3.2)	<0.0001
>55	1		1
A1C (%)
<7.0	1		1
7–9	2.2 (1.2–3.6)	0.002	2.1 (1.4–3.1)	0.0003
>9.0	3.0 (1.7–5.3)	0.0002	3.6 (2.4–5.5)	<0.0001
Hypertension	2.1 (1.3–2.7)	0.003		NS
Ethnicity	1.9 (1.2–2.7)	0.004		NS
Weight (kg)	1.01 (1.00–1.02)	0.045		NS
Model 2
Age diagnosed (years)	0.88 (0.83–0.94)	0.0001	0.7 (0.6–0.9)	0.03
A1C (%)	1.3 (1.2–1.5)	<0.0001	1.3 (1.2–1.4)	<0.0001
Hypertension	2.0 (1.2–3.2)	0.01		NS
Age (years)	1.1 (1.0–1.2)	0.002	1.3 (1.02–1.7)	0.04
Weight (kg)	1.01 (1.03–1.03)	0.03		NS
Ethnicity	1.8 (1.2–2.7)	0.005		NS