Research Article
Expression Status of PIWIL1 as a Prognostic Marker of Colorectal Cancer
Table 1
Association between PIWIL1 overexpression and clinicopathologic characteristics.
| Characteristics | Number | PIWIL1 expression | 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) | |
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LNM: lymph node metastasis; TNM: tumor node metastasis; achi-square test.
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