Table 1.

Indications for colonoscopy of patients asked for participation in this study.

Indication for colonoscopy	N = 731 (100%)
Rectal blood loss	98 (13.4%)
Abdominal discomfort	101 (13.8%)
Anaemia	34 (4.7%)
Family history of AP or CRC	136 (18.6%)
Follow-up after previous AP	96 (13.1%)
Altered bowel habits/movements	124 (17.0%)
Family history of AP or CRC and abdominal discomfort	23 (3.1%)
Family history of AP or CRC and rectal blood loss	14 (1.9%)
Suspected malignancy (signs of bowel obstruction, suspect lesion by imaging)	21 (2.9%)
FAP gene mutation carrier	3 (0.4%)
At risk for HNPCC	33 (4.5%)
Confirmed HNPCC mutation carrier	12 (1.6%)
Other/unknown	36 (4.9%)