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Table 2 Summary comparison of biomarker diagnostic properties for biomarker (miR-155, IL-1β) thresholds between control (C), generalized periodontitis (P), CHD and clinically healthy periodontium (AS-C); and CHD with generalized periodontitis (AS-P) groups

From: MicroRNA‐155 (miR-155) as an accurate biomarker of periodontal status and coronary heart disease severity: a case–control study

Biomarker

Group Comparisons

Sensitivity

Specificity

Youden Index

AUC

95% CI

Cut-Off Point

p Value

IL-1β (pg/mL)

C group vs. P group

100.0%

95.5%

0.95

1.00

1.000–1.000

 > 21.32

 < 0.0001

C group vs. AS-C group

100.0%

95.5%

0.95

1.00

1.000–1.000

 > 21.32

 < 0.0001

C group vs. AS-P group

100.0%

95.5%

0.95

1.00

1.000–1.000

 > 21.32

 < 0.0001

P group vs. AS-C group

91.0%

90.9%

0.82

0.956

0.904–1.000

 > 118.6

 < 0.0001

P group vs. AS-P group

100.0%

100.0%

1.00

1.00

1.000–1.000

 > 144.2

 < 0.0001

AS-C group vs. AS-P group

100.0%

95.5%

0.96

1.00

1.000–1.000

 > 29.72

 < 0.0001

miR-155(RQ)

C group vs. P group

76.7%

53.3%

0.30

0.686

0.550–0.821

 > 0.955

 < 0.0001

C group vs. AS-C group

90.0%

93.3%

0.83

0.958

0.914–1.000

 > 2.685

 < 0.0001

C group vs. AS-P group

100.0%

97.7%

0.98

0.994

0.982–1.000

 > 2.915

 < 0.0001

P group vs. AS-C group

86.7%

73.3%

0.60

0.837

0.735–0.941

 > 2.820

 < 0.0001

P group vs. AS-P group

96.7%

80.0%

0.77

0.957

0.915–1.000

 > 3.880

 < 0.0001

AS-C group vs. AS-P group

80.0%

50.0%

0.30

0.757

0.630–0.880

 > 7.065

 < 0.0006

  1. AUC Area under the curve, 95% CI 95% Confidence interval. McNemar test. Statistically significant differences between respective study groups considered at p < 0.05