Table 3

AUC and associated 95% CI for the studied testing variables comparing controls and diabetic patients with ETDRS grading of 10 and preserved BRB

ParametersAUC95% CIP valueSensitivity/ specificity (%)Criterion value for 90% specificity
Cambridge Colour Test
 Protan0.6460.498–0.7760.1164*21/8951
 Deutan0.5860.438–0.7240.3893*14/8949
 Tritan0.7940.656–0.8950.000150/8973
FDT
 MD0.8050.676–0.899<0.000143/90−1.51
 PSD0.7380.602–0.8470.007257/904.26
 C0.6910.552–0.8080.0318936/8829.50
 ST0.7210.584–0.8340.009850/9028.38
 SN0.7600.625–0.8650.002050/9029.00
 IN0.7110.573–0.8250.011836/9029.60
 IT0.6700.530–0.7910.054036/9329.50
ERG—P1 amplitude
 Ring 10.9380.822–0.988<0.000179/9063.1
 Ring 20.8670.730–0.950<0.000179/9033.87
 Ring 30.9000.772–0.970<0.000179/9022.76
 Ring 40.9120.787–0.976<0.000171/9013.74
 Ring 50.9210.799–0.981<0.000179/9010.40
ERG—P1 IT
 Ring 10.5000.346–0.6541.0000*14/9342.4
 Ring 20.7900.641–0.8980.001171/9034.38
 Ring 30.7210.566–0.8460.016950/9033.69
 Ring 40.6930.536–0.8230.047850/9032.91
 Ring 50.7020.546–0.8310.027243/9033.23
ERG—N1 amplitude
 Ring 10.7210.562–0.8480.020146/9011.20
 Ring 20.8810.743–0.960<0.000185/909.59
 Ring 30.9120.784–0.977<0.000185/907.12
 Ring 40.9260.801–0.984<0.000185/904.18
 Ring 50.8910.757–0.966<0.000185/903.54
ERG—N1 IT
 Ring 10.5800.418–0.7300.5013*39/9318.75
 Ring 20.7150.555–0.8430.030246/9013.80
 Ring 30.5860.424–0.7360.3982*31/9312.80
 Ring 40.5540.393–0.7080.5869*15/9012.80
 Ring 50.6030.441–0.7510.3576*31/8613.30
  • Sensitivities were obtained for each parameter at ∼90% specificity. Criterion values related with this specificity are also presented. mfERG results (in particular, the P1 wave amplitude) show the highest sensitivity values for a fixed specificity (∼90%).

  • *Nonsignificant values.