Table I.
Association analyses between expression levels of serine/threonine-protein phosphatase 2A and clinicopathological features in 80 patients with gastric cancer.
| Low expression (n=53) | High expression (n=27) | ||||
|---|---|---|---|---|---|
| Characteristic | n | % | n | % | P-value |
| Age, years | 0.055 | ||||
| <60 | 27 | 50.9 | 7 | 25.9 | |
| ≥60 | 26 | 49.1 | 20 | 74.1 | |
| Sex | 0.604 | ||||
| Female | 15 | 28.3 | 6 | 22.2 | |
| Male | 38 | 71.7 | 21 | 77.8 | |
| Tumour location | 0.339 | ||||
| Upper | 13 | 24.5 | 5 | 18.5 | |
| Middle | 12 | 22.6 | 6 | 22.2 | |
| Lower | 27 | 50.9 | 13 | 48.1 | |
| Mixed | 1 | 1.9 | 3 | 11.1 | |
| Tumour size, mm | 0.235 | ||||
| <50 | 27 | 50.9 | 18 | 66.7 | |
| ≥50 | 26 | 49.1 | 9 | 33.3 | |
| Vascular invasion | 0.267 | ||||
| Negative | 38 | 71.7 | 23 | 85.2 | |
| Positive | 15 | 28.3 | 4 | 14.8 | |
| Lymphatic invasion | 0.581 | ||||
| Negative | 39 | 73.6 | 22 | 81.5 | |
| Positive | 14 | 26.4 | 5 | 18.5 | |
| Nervous invasion | 0.999 | ||||
| Negative | 42 | 79.2 | 22 | 81.5 | |
| Positive | 11 | 20.8 | 5 | 18.5 | |
| Tumour differentiation | 0.154 | ||||
| Differentiated | 25 | 47.2 | 18 | 66.7 | |
| Undifferentiated | 28 | 52.8 | 9 | 33.3 | |
| CEA, ng/ml | 0.999 | ||||
| ≤5 | 40 | 75.5 | 20 | 74.1 | |
| >5 | 13 | 24.5 | 7 | 25.9 | |
| CA 19-9, IU/ml | 0.999 | ||||
| ≤37 | 44 | 83.0 | 23 | 85.2 | |
| >37 | 9 | 17.0 | 4 | 14.8 | |
| AJCC TNM stage | 0.429 | ||||
| I | 8 | 15.1 | 2 | 7.4 | |
| II | 19 | 35.8 | 8 | 29.6 | |
| III | 26 | 49.1 | 17 | 63.0 | |
CEA, carcinoembryonic antigen; CA 19-9, cancer antigen 19-9; AJCC TNM, American Joint Committee on Cancer Tumour-Node-Metastasis.