Table 1 Clinical characteristics of ccRCC patients
From: Epigenetic signature predicts overall survival clear cell renal cell carcinoma
Variable | Training set | Testing set | Entire set | Chi-square Test | |
|---|---|---|---|---|---|
n = 213 | n = 106 | n = 319 | χ2 | P | |
No. (%) | No. (%) | No. (%) | |||
Censor | 65 (30.5) | 40 (37.7) | 105 (32.9) | ||
Age (years) | |||||
≥ 65 | 75 (35.2) | 36 (34.0) | 111 (34.8) | 0.049 | 0.825 |
< 65 | 138 (64.8) | 70 (66.0) | 208 (65.2) | ||
Gender | |||||
Female | 80 (37.6) | 34 (32.1) | 114 (35.7) | 0.927 | 0.336 |
Male | 133 (62.4) | 72 (67.9) | 205 (64.3) | ||
Pathological stage | |||||
Stage I | 106 (49.8) | 49 (46.2) | 155 (48.6) | 1.766 | 0.779 |
Stage II | 22 (10.3) | 9 (8.5) | 31 (9.7) | ||
Stage III | 49 (23.0) | 24 (22.6) | 73 (22.9) | ||
Stage IV | 35 (16.4) | 23 (21.7) | 58 (18.2) | ||
NA | 1 (0.5) | 1 (0.9) | 2 (0.6) | ||
Histologic grade | |||||
Grade I | 6 (2.8) | 3 (2.8) | 9 (2.8) | 4.684 | 0.321 |
Grade II | 93 (43.7) | 40 (30.7) | 133 (41.7) | ||
Grade III | 75 (35.2) | 48 (45.3) | 123 (38.6) | ||
Grade IV | 35 (16.4) | 15 (14.2) | 50 (15.7) | ||
NA | 4 (1.9) | 0 (0.0) | 4 (1.3) | ||
Lymph node metastasis | |||||
Positive | 38 (17.8) | 23 (21.7) | 61 (19.1) | 0.681 | 0.409 |
Negative | 175 (82.2) | 83 (78.3) | 258 (80.9) | ||