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Table 5 Statistical analysis

From: Histologic assessment of biliary obstruction with different percutaneous endoluminal techniques

Technique

Sensitivity

Specificity

Accuracy

PPV

NPV

Brushing

47.8% 28.10–69.66*

100% 87.30–100.00*

69.2%

100%

57.1%

Biopsy

92.1% 75.56–98.53*

100% 89.34–100.00*

93.6%

100%

75%

Balloon brushing

87.5% 52.30–99.96*

100% 64.31–100.00*

91.7%

100%

80%

  1. * 99% C.I. (Geigy scientific tables)