Table 2.

Analysis of the positive and negative predictive values per patient

Analysis according to patient (with polyps ≥6 mm)
Positive predictive value
Radiographer R1	57.1 [39.1–73.5]
Radiographer R2	57.7 [38.9–74.7]
Radiographer R3	60.0 [42.3–75.4]
Radiographer R4	51.7 [34.4–68.6]
Radiologist R5	63.6 [43.0–80.3]
Radiologist R6	51.4 [35.6–67.0]
Average reader values
Radiographers	56.6 [40.1–73.2]
Radiologists	56.1 [40.0–72.3]
Negative predictive value
Radiographer R1	91.5 [81.6–96.3]
Radiographer R2	90.2 [80.2–95.4]
Radiographer R3	94.7 [85.6–98.2]
Radiographer R4	89.7 [79.2–95.2]
Radiologist R5	89.2 [79.4–94.7]
Radiologist R6	94.2 [84.4–98.0]
Average reader values
Radiographers	91.5 [85.2–97.8]
Radiologists	91.5 [85.4–97.5]