Table 2.
Patient characteristics according to their p16INK4A expression in IHC analysis.
| Total (n = 21) | p16INK4A-negative (n = 7) | p16INK4A-positive (n = 14) | p value | |
|---|---|---|---|---|
| Age, median | 66.00 | 70.00 | 61.00 | 0.062a |
| Male, n (%) | 12 (57.14) | 5 (71.43) | 7 (50.00) | 0.64b |
| T staging, n (%) | 0.13b | |||
| 1 | 0 (0) | 0 (0) | 0 (0) | |
| 2 | 1 (4.76) | 0 (0) | 1 (7.14) | |
| 3 | 19 (90.48) | 6 (85.71) | 13 (92.86) | |
| 4 | 1 (4.76) | 1 (14.29) | 0 (0) | |
| N staging, n (%) | 0.85b | |||
| 0 | 8 (38.10) | 3 (42.86) | 5 (35.71) | |
| 1 | 6 (28.57) | 1 (14.29) | 5 (35.71) | |
| 2 | 7 (33.33) | 3 (42.86) | 4 (28.57) | |
| M staging, n (%) | 1.00b | |||
| 0 | 21 (100) | 7 (100) | 14 (100) | |
| 1 | 0 (0) | 0 (0) | 0 (0) | |
| Localization, n (%) | 0.15b | |||
| Ascending | 0 (0) | 0 (0) | 0 (0) | |
| Transverse | 1 (4.76) | 1 (14.29) | 0 (0) | |
| Descending/sigmoid/rectum | 20 (95.24) | 6 (85.71) | 14 (100) | |
| Microsatellite stable, n (%) | 21 (100) | 7 (100) | 14 (100) | 1.00b |
a
p values were obtained from Mann-Whitney U test.
b
p values were obtained from Chi-square test.