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Table 5 Results of ROC analysis assessing diagnostic power of colonoscopic vs. imaging techniques of investigation

From: Efficacy of endoscopic surveillance in the detection of local recurrence after radical rectal cancer surgery is limited? A retrospective study

 

All recurrences

Anastomotic recurrences

AUC (95% CI)

Sensitivity

Specificity

PPV

NPV

P value

AUC (95% CI)

Sensitivity

Specificity

PPV

NPV

P value

Whole group

0.7310 (0.5644‑0.8795)

46.7%

99.5%

87.5%

96.4%

0.0066

0.8910 (0.6828‑1)

80.0%

98.2%

50.0%

99.5%

0.0002

RT+

0.7273 (0.5316‑0.9229)

45.5%

100.0%

100%

96.3%

0.0228

0.9910 (0.976‑1)

100.0%

98.2%

40.0%

100%

< 0.0001

RT-

0.7409 (0.4223‑1)

50.0%

98.2%

66.7%

96.4%

0.1383

0.8244 (0.496‑1)

66.7%

98.2%

66.7%

98.2%

0.0525

  1. Abbreviations: AUC Area under the receiver operating characteristic (ROC) curve, PPV Positive predictive value, NPV Negative predictive value, RT Radiotherapy