Table 1.

Sensitivity and specificity of ACR for predicting DR.

ACR cut-off, mg/mmol (μg/mg)	Sensitivity, %	Specificity, %	Positive LRs	Negative LRs
1.808 (16)	52.8	69.4	1.73	0.68
2.034 (18)	49.7	71.7	1.75	0.7
2.26 (20)*	49.2	74.1	1.93	0.68
2.486 (22)	47.2	75.1	1.9	0.7
2.712 (24)	44.2	77.2	1.92	0.72
2.938 (26)	43.7	78.7	2.07	0.71
3.164 (28)	42.2	80.2	2.15	0.72
3.39 (30)†	40.7	81.2	2.15	0.73
3.616 (32)	40.7	82.2	2.25	0.72

^*The best cut-off point. ^†Current cut-off point for microalbuminuria.

ACR, albumin-to-creatinine ratio; DR, diabetic retinopathy; LR, likelihood ratio.