Figure 1. Joint effect of retinal microvascular abnormalities and microalbuminuria on risk of cardiovascular event.
P-interaction for retinal microvascular abnormalities and microalbuminuria = 0.025 Group 1 (Referent): No retinal microvascular abnormalities and no microalbuminuria Group 2: Presence of microalbuminuria only Group 3: One retinal microvascular abnormality (either retinal venular widening or retinopathy) only Group 4: One retinal microvascular abnormality and presence of microalbuminuria Group 5: Two retinal microvascular abnormalities (retinal venular widening and retinopathy) and no presence of microalbuminuria Group 6: Two retinal microvascular abnormalities and presence of microalbuminuria.