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Table 7 Sensitivity and specificity and their exact 95% CIs for each SUVR type/pathology SoT combination for all 4 studies combined

From: Diagnostic effectiveness of quantitative [18F]flutemetamol PET imaging for detection of fibrillar amyloid β using cortical biopsy histopathology as the standard of truth in subjects with idiopathic normal pressure hydrocephalus

 

Cerebellum REF

Pons REF

Pathology SoT

Ipsilateral

Contralateral

Composite

Ipsilateral

Contralateral

Composite

4G8

      

Sensitivity (95% CI)

1.0000 (0.6637, 1.0000)

1.0000 (0.6637, 1.0000)

0.6667 (0.2993, 0.9251)

1.0000 (0.6637, 1.0000)

0.8889 (0.5175, 0.9972)

0.8889 (0.5175, 0.9972)

Specificity (95% CI)

0.6216 (0.4476, 0.7754)

0.6757 (0.5021, 0.8199)

0.8649 (0.7123, 0.9546)

0.5000 (0.3338, 0.6662)

0.6579 (0.4865, 0.8037)

0.6316 (0.4599, 0.7819)

Maximal sum (sensitivity + specificity)

1.6216

1.6757

1.5316

1.5000

1.5468

1.5205

Bielschowsky

      

Sensitivity (95% CI)

1.0000 (0.6306, 1.0000)

1.0000 (0.6306, 1.0000)

1.0000 (0.6306, 1.0000)

1.0000 (0.6306, 1.0000)

1.0000 (0.6306, 1.0000)

1.0000 (0.6306, 1.0000)

Specificity (95% CI)

0.8889 (0.7084, 0.9765)

0.8889 (0.7084, 0.9765)

0.9259 (0.7571, 0.9909)

0.8214 (0.6311, 0.9394)

0.9286 (0.7650, 0.9912)

0.8571 (0.6733, 0.9597)

Maximal sum (sensitivity + specificity)

1.8889

1.8889

1.9259

1.8214

1.9286

1.8571

Thioflavin S

      

Sensitivity (95% CI)

0.7778 (0.3999, 0.9719)

0.8889 (0.5175, 0.9972)

1.0000 (0.6637, 1.0000)

0.8889 (0.5175, 0.9972)

0.8889 (0.5175, 0.9972)

0.8889 (0.5175, 0.9972)

Specificity (95% CI)

0.9688 (0.8378, 0.9992)

0.9063 (0.7498, 0.9802)

0.8438 (0.6721, 0.9472)

0.7576 (0.5774, 0.8891)

0.9091 (0.7567, 0.9808)

0.8485 (0.6810, 0.9489)

Maximal sum (sensitivity + specificity)

1.7466

1.7952

1.8438

1.6465

1.7980

1.7374

Overall pathology

      

Sensitivity (95% CI)

0.9286 (0.6613, 0.9982)

1.0000 (0.7684, 1.0000)

1.0000 (0.7684, 1.0000)

0.9286 (0.6613, 0.9982)

1.0000 (0.7684, 1.0000)

0.9286 (0.6613, 0.9982)

Specificity (95% CI)

1.0000 (0.8972, 1.0000)

0.9706 (0.8467, 0.9993)

1.0000 (0.8972, 1.0000)

0.8571 (0.6974, 0.9519)

0.8857 (0.7326, 0.9680)

1.0000 (0.9000, 1.0000)

Maximal sum (sensitivity + specificity)

1.9286

1.9706

2.0000

1.7857

1.8857

1.9286

  1. CI = confidence interval; REF = PET imaging brain reference region; SoT = standard of truth, SUVR = standard uptake value ratio.