Table 3 Patients´ and doctors’ reports of rectal bleeding alone and in combination with FIT results, stratified for diagnoses of colorectal cancer and inflammatory bowel disease
Rectal bleeding reported | Rectal bleeding reported only | Rectal bleeding reported and FIT | Rectal bleeding denied | Rectal bleeding denied and FIT | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
FIT positive | FIT negative | FIT positive | FIT negative | ||||||||||||||
N | No CRC or IBD | CRC + IBD | PPV % (CI) | No CRC or IBD | CRC + IBD | PPV % (CI) | No CRC or IBD | CRC + IBD | NPV % (CI) | N | No CRC or IBD | CRC + IBD | PPV % (CI) | No CRC or IBD | CRC + IBD | NPV % (CI) | |
Patients | 151 | 136 | 15 | 9.9 (5.2–14.7) | 48 | 14 | 22.6 (12.2–33.0) | 88 | 1 | 98.9 (96.7–100) | 196 | 53 | 3 | 5.4 (0–11.3) | 139 | 1 | 99.3 (97.9–100) |
Blood only on paper | 71 | 65 | 6 | 8.5 (2.0–14.9) | 19 | 5 | 20.8 (4.6–37.1) | 46 | 1 | 97.9 (93.8–100) | NA | NA | NA | NA | NA | NA | NA |
Blood in toilet | 80 | 71 | 9 | 11.3 (4.3–18.2) | 29 | 9 | 23.7 (10.2–37.2) | 42 | 0 | 100 (98.9–100) | NA | NA | NA | NA | NA | NA | NA |
Doctors | 91 | 80 | 11 | 12.1 (5.4–18.8) | 32 | 11 | 25.6 (12.5–38.6) | 48 | 0 | 100 (99.0–100) | 245 | 66 | 6 | 8.3 (2.0–14.7) | 173 | 0 | 100 (99.4–100) |