Table 1.
Association between PIWIL1 overexpression and clinicopathologic characteristics.
| Characteristics | Number | PIWIL1 expression | P a | |
|---|---|---|---|---|
| Low (%) | High (%) | |||
| Age (years) | 0.477 | |||
| <60 | 57 | 22 (47.8) | 35 (54.7) | |
| ≥60 | 53 | 24 (52.2) | 29 (45.3) | |
| Sex | 0.350 | |||
| Male | 56 | 21 (45.7) | 35 (54.7) | |
| Female | 54 | 25 (54.3) | 29 (45.3) | |
| Tumor size | 0.528 | |||
| <5 cm | 44 | 20 (43.5) | 24 (37.5) | |
| ≥5 cm | 66 | 26 (56.5) | 40 (62.5) | |
| TNM stage | 0.007 | |||
| I | 23 | 14 (30.4) | 9 (14.1) | |
| II | 42 | 19 (41.3) | 23 (35.9) | |
| III | 34 | 11 (23.9) | 23 (35.9) | |
| IV | 11 | 2 (4.3) | 9 (14.1) | |
| Differentiation | 0.017 | |||
| Well | 31 | 18 (39.1) | 13 (20.3) | |
| Moderate | 47 | 19 (41.3) | 28 (43.8) | |
| Poor | 32 | 9 (19.6) | 23 (35.9) | |
| Infiltrate depth | 0.002 | |||
| T1 + T2 | 43 | 26 (56.5) | 17 (26.6) | |
| T3 + T4 | 67 | 20 (43.5) | 47 (73.4) | |
| Lymphovascular invasion | 0.012 | |||
| No | 61 | 32 (69.6) | 29 (45.3) | |
| Yes | 49 | 14 (30.4) | 35 (54.7) | |
| Lymph node metastasis | 0.032 | |||
| No | 71 | 35 (76.1) | 36 (56.3) | |
| Yes | 39 | 11 (23.9) | 28 (43.8) | |
| Tumor location | 0.383 | |||
| Rectum | 58 | 22 (47.8) | 36 (56.3) | |
| Colon | 52 | 24 (52.2) | 28 (43.8) | |
LNM: lymph node metastasis; TNM: tumor node metastasis; achi-square test.