Table 1 Baseline characteristics of the full cohort and random subgroup of non-pedunculated T1CRCs.
Random subgroup (50%) N = 333 | Fullcohort N = 651 | |
|---|---|---|
Male gender, n (%) | 185 (55.6) | 344 (52.8) |
Age in years, median (IQR) | 71 (64–77) | 70 (64–77) |
Missing, n | 0 | 2 |
Tumor size in mm, median (IQR) | 25 (15–40) | 25 (15–40) |
Missing, n | 21 | 45 |
Tumor location, n (%) | ||
Right-sided colon | 108 (32.4) | 210 (32.3) |
Left-sided colon | 169 (50.8) | 317 (48.7) |
Rectum | 56 (16.8) | 124 (19.0) |
Treatment, n (%) | ||
Primary surgery | 246 (73.9) | 471 (72.4) |
Secondary surgery | 87 (26.1) | 180 (27.6) |
Year of diagnosis, n (%) | ||
2000–2005 | 90 (27.0) | 168 (25.8) |
2006–2010 | 126 (37.8) | 248 (38.1) |
2011–2014 | 117 (35.1) | 235 (36.1) |
Nr. of retrieved lymph nodes, median (IQR) | 8 (4–12) | 8 (4–13) |
Follow-up time in months, median (IQR) | 45 (18-80) | 44 (17–78) |
