Table 1 Performance characteristics per patient and per polyp
Analysis according to patient (with polyps ≥6 mm) | Sensitivity | Specificity |
(% [95 % CI]) | ||
Radiographer R1 | 76.2 [54.9–89.4] | 81.8 [70.9–89.3] |
Radiographer R2 | 71.4 [50.0–86.2] | 83.3 [72.6–90.4] |
Radiographer R3 | 85.7 [65.4–95.0] | 81.8 [70.9–89.3] |
Radiographer R4 | 71.4 [50.0–86.2] | 78.8 [67.5–86.9] |
Radiologist R5 | 66.7 [45.4–82.8] | 87.9 [77.9–93.7] |
Radiologist R6 | 85.7 [65.4–95.0] | 74.2 [62.6–83.3] |
Average reader values | ||
Radiographers | 76.2 [61.4–91.0] | 81.4 [73.7–89.2] |
Radiologists | 76.2 [61.7–90.6] | 81.1 [73.8–88.3] |
Analysis according to polyp | Sensitivity | |
Size category | ≥6 mm | ≥10 mm |
Radiographer R1 | 53.8 [39.9–67.8] | 50.0 [27.3–72.7] |
Radiographer R2 | 56.4 [40.3–72.5] | 61.5 [37.4–85.7] |
Radiographer R3 | 71.8 [61.2–82.4] | 60.0 [38.8–81.2] |
Radiographer R4 | 59.0 [44.3–73.6] | 71.4 [50.1–92.8] |
Radiologist R5 | 51.3 [36.7–65.9] | 66.7 [45.3–88.0] |
Radiologist R6 | 67.6 [48.9–86.3] | 71.4 [43.4–99.4] |
Average reader values | ||
Radiographers | 60.3 [50.3–70.3] | 60.7 [42.2–79.2] |
Radiologists | 59.2 [46.4–72.0] | 69.0 [48.1–89.6] |