Accuracy of canine scent detection by site and stage of cancer
| Site/stage | Breath samples | Watery stool samples | ||||||||||
| 0 | I | II | III | IV | Total | 0 | I | II | III | IV | Total | |
| Appendix | 1/1 | 1/1 | 1/1 | 1/1 | ||||||||
| Caecum | 1/1 | 1/1 | 1/1 | 1/1 | ||||||||
| Ascending | 1/1 | 3/3 | 4/5* | 2/2 | 10/11* | 1/1 | 1/1 | 3/3 | 5/5 | 2/2 | 12/12 | |
| Transverse | 1/1 | 1/1 | 1/1 | 1/1 | 2/2 | |||||||
| Descending | 1/1 | 1/1 | 2/2 | 1/1 | 1/1 | 2/2 | ||||||
| Sigmoid | 1/1 | 4/5 | 1/1 | 1/1 | 7/8 | 2/2 | 2/2 | 1/1 | 1/1 | 6/6 | ||
| Rectum | 1/1 | 1/2 | 1/1 | 3/3 | 4/4 | 10/11 | 2/2 | 1/2 | 2/2 | 4/4 | 3/3 | 12/13 |
| R+S | 1/1 | 1/1 | 1/1 | 1/1 | ||||||||
| Total | 4/4 | 6/8 | 7/7 | 9/10* | 7/7 | 33/36* | 6/6 | 5/6 | 9/9 | 11/11 | 6/6 | 37/38 |
| Sensitivity | 1 | 0.67 | 1 | 0.89 | 1 | 0.91 | 1 | 0.8 | 1 | 1 | 1 | 0.97 |
| Specificity | 1 | 0.92 | 1 | 1 | 1 | 0.99 | 1 | 0.95 | 1 | 1 | 1 | 0.99 |
Number of true positives/total test number are shown.
↵* Hesitation occurred.
R+S, double rectal and sigmoid colon cancer.