Table 3.

Rates of post-colonoscopy colorectal cancer (PC-CRC)

Per patient analysis
Total number of patients	107,744
PC-CRC (%)	1031 (0.96%)
PC-CRC in the same colorectal  segment (%)	323 (0.30%)
Mean follow-up per patient,  years (SD)	5.08 (1.19)
Incidence rate of PC-CRC	1.88 per 1000 person years
Incidence rate of PC-CRC in the  same segment	0.59 per 1000 person years
Per adenoma analysis
Total number of adenomas	133,519
PC-CRC in the same  segment (%)	323 (0.24%)
Mean follow-up per adenoma,  years (±SD)	4.35 (1.11)
Incidence rate of PC-CRC in the  same segment	0.56 per 1000 years of follow up
Distribution of occurrence of PC-CRCs in the same segment, according to time after adenoma resection
Between 6 months and one year	84 (26.0%)
Second year	65 (20.1%)
Third year	61 (18.9%)
Fourth year	58 (18.0%)
Fifth year	55 (17.0%)

SD: standard deviation.