Determining Risk Factors That Affect Progression in Patients with Nonproliferative Diabetic Retinopathy

Table 5

Effect of time-independent risk factors in the final model.

Time-independent risk factor	Hazard ratio	95% confidence interval
Age (per year)	0.99	(0.973–0.999)	0.047
Duration of DM (per year)	1.02	(1.000–1.039)	0.018
Hispanic (versus non-Hispanic)	1.31	(0.969–1.767)	0.068

DM = diabetes mellitus.