Comparison of the Application Value for Diagnosis of Chronic Kidney Disease between Color Doppler Flow Quantification Technique and Computed Tomography

Table 3

Comparison of the diagnostic value for different types of CDK between the two diagnosis modalities.

Group	AUC value		Positive predictive value		Negative predictive value		Sensitivity		Specificity
	640-slice volume CT	CDFQ	640-slice volume CT	CDFQ	640-slice volume CT	CDFQ	640-slice volume CT	CDFQ	640-slice volume CT	CDFQ
Stage 1	0.835	0.636	82.61%	52.17%	84.38%	75.00%	79.17%	60.00%	87.10%	68.57%
Stage 2	0.822	0.675	80.00%	60.00%	84.38%	75.00%	76.19%	60.00%	87.10%	75.00%
Stage 3	0.875	0.799	87.50%	75.00%	87.50%	84.38%	77.78%	70.59%	93.33%	87.10%
Stage 4	0.822	0.791	76.92%	76.92%	87.50%	81.25%	71.43%	62.50%	90.32%	89.66%
Stage 5	0.813	0.750	75.00%	68.75%	87.50%	81.25%	75.00%	64.71%	87.50%	83.87%