Table 3.
Variable | n | Unmethylation Index percentage | P‐value | Methylation status (n) | P‐value | |||
---|---|---|---|---|---|---|---|---|
Mean ( ± s) ¶ | Median (range) | u ¶ | m + u ¶ | m ¶ | ||||
Age | ||||||||
≥ 60 | 34 | 52.84 ± 34.50 | 56.69 (84.32) | 0.340 † | 13 | 11 | 10 | 0.393 § |
< 60 | 33 | 59.34 ± 34.47 | 82.31 (87.01) | 17 | 10 | 6 | ||
Sex | ||||||||
Male | 37 | 54.50 ± 36.19 | 68.38 (86.93) | 0.612 † | 16 | 11 | 10 | 0.401 § |
Female | 30 | 57.93 ± 32.51 | 68.48 (83.45) | 14 | 10 | 6 | ||
Histological types | ||||||||
Differentiated | 62 | 54.65 ± 34.58 | 61.73 (87.01) | 0.298 † | 27 | 19 | 16 | 0.301 § |
Undifferentiated | 5 | 73.24 ± 29.49 | 86.84 (70.11) | 3 | 2 | 0 | ||
Stage | ||||||||
I | 17 | 35.27 ± 32.86 | 15.01 (82.52) | < 0.0001 ‡ | 3 | 5 | 9 | 0.003 § |
II | 19 | 52.40 ± 31.96 | 42.55 (83.65) | 7 | 10 | 2 | ||
III | 26 | 66.25 ± 32.95 | 85.90 (85.31) | 15 | 6 | 5 | ||
IV | 5 | 89.35 ± 2.410 | 88.69 (5.900) | 5 | 0 | 0 | ||
Lymph node invasion | ||||||||
Positive | 30 | 68.88 ± 31.32 | 87.25 (84.84) | 0.009 † | 19 | 6 | 5 | 0.025 § |
Negative | 37 | 45.62 ± 33.58 | 28.98 (85.33) | 11 | 15 | 11 | ||
Distant metastasis | ||||||||
Positive | 5 | 89.35 ± 2.410 | 88.69 (5.900) | 0.039 † | 5 | 0 | 0 | 0.049 § |
Negative | 62 | 53.35 ± 34.35 | 56.69 (87.01) | 25 | 21 | 16 |
Calculated by the Mann–Whitney U‐test.
‡ Calculated by Spearman's correlation analysis.
§ Calculated by Fisher's exact test.
± s: mean ± standard deviation. m: completely methylated; m + u: partially unmethylated or partially methylated; u, completely unmethylated.