In patients referred for symptoms of "suspected functional origin" sensitivity and negative predictive value for colorectal cancer were also 100%. In unselected outpatients referred for colonoscopy, a single measurement of faecal calprotectin is not sufficiently accurate to identify those with significant ...
The accuracy, sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) of this novel CAD system for the training set were 87.0%, 87.1%, 87.0%, 93.1%, and 76.9%, respectively. The test set included 115 adenomatous polyps and 66 non-adenomatous polyps that...
PPV positive predictive value, NPV negative predictive value, AUCarea under the receiver operating characteristic curve, CI confidence interval. According to Jones et al., when AI was trained using 50 and 30 unambiguous benign and malignant images of the colon, the accuracy was 92.3% and ...
The negative predictive value of 93% for significant polyps fulfills demands for a screening exam,[28]although the meaning is altered by a PPV of 20 to 63%. A recently published study[20]showed comparable results for sensitivity and negative predictive value, although patients with known history...
reported that use of NBI together with the NICE classification might also be useful, as the accuracy was 89% and the negative predictive value was 95% with high predictive value in real-time assessment [43]. However, more prospective research is needed to prove that this classification can be...
Positive predictive value; NPV: Negative predictive value; STROBE: STrengthening the Reporting of OBservational studies in Epide- miology; TUH: Tallaght University Hospital; CIR: Caecal intubation rate; PDR: Polyp detection rate; NQAIS: National Quality Assurance Information System; PEG: Polyethylene...
The sensitivity, specificity, positive and negative predictive value of DCS > 1 for the prediction of difficult colonoscopy was 73%, 50%, 85% and 66% respectively. Base on ROC curve, patients could be divided into low-risk(DCS ≤ 1) and high-risk (DCS > 1). Compared ...
Specificity or True Negative Rate (TNR): Specificity=TNTN+FP (3) Precision or Positive Predictive Value (PPV): Precision=TPTP+FP (4) Accuracy=TP+TNTP+TN+FP+FN (5) F1 Score=2×Precision×SensitivityPrecision+Sensitivity (6) AUC: Area Under the Receiver Operating Characteristic Curve, measures...
Overall sensitivity was 79 % (95 % confidence interval [CI], 61 to 90), specificity was 54 % (95 % CI, 35 to 70), positive predictive value (PPV) was 63 % and negative predictive value (NPV) was 71%. Adjusted to significance of findings 展开 年份: 2013 ...
In a study of screening with 3 modalities (stool DNA, colonoscopy, and fecal immunochemical tests) in average-risk patients, nearly 10 % of those with an entirely negative colonoscopy had a positive stool DNA test. It is not known whether these positive tests are clinically important, for ...