Table 1.

Baseline characteristics

	Linked colour imaging (N=160)*	High-definition white light endoscopy (N=172)*
Age in years	49.6 (14.4)	47.32 (13.8)
Male gender	74 (46%)	67 (39%)
Time since diagnosis in years	5 (2–10)	6 (2–9)
Type pathogenic gene variant
MLH1	37 (24%)	39 (23%)
MSH2	63 (39%)	66 (38%)
MSH6	35 (22%)	43 (25%)
PMS2	24 (15%)	23 (14%)
Epcam	1 (0%)	1 (0%)
History of colorectal cancer	35 (22%)	37 (22%)
Surveillance interval in months	17 (12–25)	18 (13–24)
Number of previous colonoscopies
0	20 (13%)	22 (13%)
1	24 (15%)	25 (15%)
2+	116 (72%)	125 (72%)
Neoplasia detected during previous colonoscopy	36 (23%)	36 (21%)

Data are n (%), n, mean (SD) or median (P25–P75).

*The baseline characteristics for patients who completed the trial were not statically different.