Table 3 Performance characteristics of OC, CTC, FS, FOBT and FIT in the detection of colonic adenomas in asymptomatic adults.
All sizes>5 mm>9 mmAdvanced colonic neoplasia
No./total no. (% (95% CI))No./total no. (% (95% CI))No./total no. (% (95% CI))No./total no. (% (95% CI))
OCSens110/113 (97.3 (92.4 to 99.4))45/46 (97.8 (88.5 to 99.9))25/25 (100.0 (86.3 to 100.0))30/30 (100 (88.4 to 100))
Spec116/194 (59.8 (52.5 to 66.8))250/261 (95.8 (92.6 to 97.9))278/282 (98.6 (96.4 to 99.6))119/277 (43.0 (37.1 to 49))
PPV110/188 (58.5 (51.1 to 65.6))45/56 (80.4 (67.6 to 89.8))25/29 (86.2 (68.3 to 96.1))30/188 (16.0 (11.0 to 22.0))
NPV116/119 (97.5 (92.8 to 99.5))250/251 (99.6 (97.8 to 100))278/278 (100.0 (98.7 to 100.0))119/119 (100 (96.9 to 100))
FSSens81/113 (71.7 (62.4 to 79.8))31/46 (67.4 (52.0 to 80.5))17/25 (68.0 (46.5 to 85.1))25/30 (83.3 (65.3 to 94.4))
Spec138/194 (71.1 (64.2 to 77.4))258/261 (98.9 (96.7 to 99.8))281/282 (99.6 (98.0 to 100.0))165/277 (59.6(53.5 to 65.4))
PPV81/137 (59.1 (50.4 to 67.4))31/34 (91.2 (76.3 to 98.1))17/18 (94.4 (72.7 to 99.9))25/137 (18.2(12.2 to 25.7))
NPV138/170 (81.2 (74.5 to 86.8))258/273 (94.5 (91.1 to 96.9))281/289 (97.2 (94.6 to 98.8))165/170 (97.1(93.3 to 99))
CTCSens95/113 (84.1 (76.0 to 90.3))42/46 (91.3 (79.2 to 97.6))23/25 (92.0 (74.0 to 99.0))29/30 (96.7(82.8 to 99.9))
Spec92/194 (47.4 (40.2 to 54.7))243/261 (93.1 (89.3 to 95.9))276/282 (97.9 (95.4 to 99.2))109/277 (39.4 (33.6 to 45.4))
PPV95/197 (48.2 (41.1 to 55.4))42/60 (70.0 (56.8 to 81.2))23/29 (79.3 (60.3 to 92.0))29/197 (14.7(10.1 to 20.5))
NPV92/110 (83.6 (75.4 to 90.0))243/247 (98.4 (95.9 to 99.6))276/278 (99.3 (97.4 to 99.0))109/110 (99.1(95.0 to 100))
FOBTSens20/99 (20.2 (12.8 to 29.5))7/40 (17.5 (7.3 to 32.8))5/21 (23.8 (8.2 to 47.2))5/25 (20.0 (6.8 to 40.7))
Spec166/177 (93.8 (89.2 to 96.9))212/236 (89.8 (85.2 to 93.4))229/255 (89.8 (85.4 to 93.2))225/251 (89.6 (85.2 to 93.1))
PPV20/31 (64.5 (45.4 to 80.8))7/31 (22.6 (9.6 to 41.1))5/31 (16.1 (5.5 to 33.7))5/31 (16.1 (5.5 to 33.7))
NPV166/245 (67.8 (61.5 to 73.6))212/245 (86.5 (81.6 to 90.5))229/245 (93.5 (89.6 to 96.2))225/245 (91.8 (87.7 to 94.9))
FITSens25/102 (24.5 (16.5 to 34.0))16/40 (40.0 (24.9 to 56.7))7/21 (33.3 (14.6 to 57.0))8/25 (32.0 (14.9 to 53.5))
Spec163/183 (89.1 (83.6 to 93.2))216/245 (88.2 (83.4 to 91.9))226/264 (85.6 (80.8 to 89.6))223/260 (85.8 (80.9 to 89.8))
PPV25/45 (55.6 (40.0 to 70.4))16/45 (35.6 (21.9 to 51.2))7/45 (15.6 (6.5 to 29.5))8/45 (17.8 (8.0 to 32.1))
NPV163/240 (67.9 (61.6 to 73.8))216/240 (90.0 (85.5 to 93.5))226/240 (94.2 (90.4 to 96.8))223/240 (92.9 (88.9 to 95.8))
FS + FOBTSens71/99 (71.7 (61.8 to 80.3))28/40 (70.0 (53.5 to 83.4))16/21 (76.2 (52.8 to 91.8))20/25 (80.0 (59.3 to 93.2))
Spec120/177 (67.8 (60.4 to 74.6))211/236 (89.4 (84.8 to 93.0))228/255 (89.4 (85.0 to 92.9))143/251 (57.0 (50.6 to 63.2))
PPV71/128 (55.5 (46.4 to 64.3))28/53 (52.8 (38.6 to 66.7))16/43 (37.2 (23.0 to 53.3))20/128 (15.6 (9.8 to 23.1))
NPV120/148 (81.1 (73.8 to 87.0))211/223 (94.6 (90.8 to 97.2))228/233 (97.9 (95.1 to 99.3))143/148 (96.6 (92.3 to 98.9))
FS + FITSens79/102 (77.5 (68.1 to 85.1))32/40 (80.0 (64.4 to 90.9))15/21 (71.4 (47.8 to 88.7))21/25 (84.0(63.9 to 95.5))
Spec119/183 (65.0 (57.6 to 71.9))215/245 (87.8 (83.0 to 91.6))225/264 (85.2 (80.4 to 89.3))138/260 (53.1 (46.8 to 59.3))
PPV79/143 (55.2 (46.7 to 63.6))32/62 (51.6 (38.6 to 64.5))15/54 (27.8(16.5 to 41.6))21/143 (14.7 (9.3 to 21.6))
NPV119/142 (83.8 (76.7 to 89.4))215/223 (96.4 (93.1 to 98.4))225/231 (97.4(94.4 to 99.0))138/142 (97.2 (92.9 to 99.2))
  • Analysis according to the patient.

  • CTC, CT colonography; FIT, faecal immunochemical stool testing; FOBT, faecal occult blood testing; FS, flexible sigmoidoscopy; NPV, negative predictive value; OC optical colonoscopy; PPV, positive predictive value; Sens, sensitivity; Spec, specificity.