Computational and Mathematical Methods in Medicine / 2017 / Article / Tab 4

Research Article

Defining an Optimal Cut-Point Value in ROC Analysis: An Alternative Approach

Table 4

Bootstrap standard deviation, coverage probability, and mean length of the 95% confidence interval estimation of all methods. The normal homoscedastic balanced scenario.

Sample sizesMinimum valueYouden indexConcordance probabilityPoint closest-to-(0-1)
corner
Index of Union
CoverageMean lengthCoverageMean lengthCoverageMean lengthCoverageMean lengthCoverageMean length

0.25500.74730.9642.75590.47760.9691.84840.26330.9711.03330.22620.9690.88370.13800.9740.5502
1000.67670.9672.56370.40170.9681.55530.20610.9730.80740.17670.9720.70190.10700.9660.4173
2000.60390.9682.30590.3380.9691.30630.16060.9590.58960.13930.9670.53590.08580.9700.3325

0.52500.48110.9681.85210.35070.9691.34110.26020.9711.01810.20710.9730.81870.16300.9730.6476
1000.41860.9681.58780.27780.9721.10060.19820.9690.75660.16070.9700.62330.14200.9690.5489
2000.34340.9701.33990.2190.9750.87860.15510.9730.61390.11990.9710.47170.12310.9650.4623

0.84500.35560.9691.35570.28260.9691.08370.23540.9730.92610.19210.9740.76920.18450.9760.7475
1000.28990.9701.11060.22890.9720.89220.19300.9720.75950.14770.9720.58430.16370.9700.6491
2000.25150.9700.96190.18900.9720.73750.15380.9750.61540.11320.9710.43560.14650.9700.5601

1.28500.29580.9651.11060.25780.9741.02620.23790.9740.94190.20270.9730.81980.21660.9740.8668
1000.23590.9680.89730.20740.9720.81120.19160.9750.76790.15660.9710.61570.18310.9730.7294
2000.18510.9710.72400.15560.9700.61410.14310.9700.56830.10940.9720.42720.14140.9690.5607

~,   ~, and was taken as 0.51, 1.05, 1.68, and 2.56, respectively.

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