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Table 2 Demographics of the patients enrolled in a National CRC Surveillance Program

From: A prospective analysis of false positive events in a National Colon Cancer Surveillance Program

Variable Surgeon-surveillance n = 55 (%) GP-surveillance n = 55 (%) Total n = 110 (%) p value
Mean age (SD) 66.7 (7.3) 64.0 (8.7) 65.4 (8.1) ns
Male 32 (58.2) 33 (60.0) 65 (59.1) ns
Female 23 (41.8) 22 (40.0) 45 (40.9) ns
Tumour location  
Coecum 13 (23.6) 13 (23.6) 26 (23.6) ns
Ascendens 9 (16.3) 5 (9.1) 14 (12.7) ns
Transversum 4 (7.2) 5 (9.1) 9 (8.1) ns
Decendens 1 (1.8) 4 (1.8) 5 (4.5) ns
Sigmoid 28 (50.9) 28 (50.9) 56 (50.9) ns
Type of surgery  
Laparoscopic 14 (25.5) 11 (20.0) 25 (22.7) ns
Open 41 (74.5) 44 (80.0) 85 (77.3) ns
Tumour stage  
Dukes A 12 (21.8) 11 (20.0) 24 (21.8) ns
Dukes B 25 (45.5) 30 (54.5) 55 (50.0) ns
Dukes C 18 (32.7) 14 (25.5) 32 (29.0) ns
Total surveillance months 942 942 1884 ns
Median surveillance (months) 17 17 17 NA
Surveillance tests n 513 592 1105 ns
Carcinoembryonic antigen CEA (%) 203 (39) 300 (51) 503 <0.001
Chest X-ray (%) 150 (29) 128 (21) 278 0.003
Liver ultrasound (%) 110 (21) 99 (17) 209 0.03
Colonoscopy (%) 50 (9) 65 (11) 115 ns
Consultations n 508 678 1186 ns