Table I.
Clinical characteristics of patients in the TCGA and E-MTAB-4725 datasets.
| Clinical characteristics | TCGA (n=376) | E-MTAB-4725 (n=204) | P-value |
|---|---|---|---|
| Age (years; means ± SD) | 57.64±5.44 | 55.73±12.97 | 0.1157a |
| Sex (male/female) | 235/141 | 100/104 | 0.0023b |
| Pathologic_M (M0/M1/-) | 351/19/6 | 202/2 | 0.0211b |
| Pathologic_N (N0/N1/N2/N3/-) | 182/71/43/56/24 | 182/6/13/3 | 2.2E−16b |
| Pathologic_T (T1/T2/T3/T4/-) | 62/73/80/128/33 | 6/66/72/59 | 1.72E−08b |
| Pathologic_stage (I/II/III/IV/-) | 80/111/166/19 | 58/123/21/2 | 2.2E−16b |
| Radiation therapy (yes/no) | 40/336 | – | – |
| New tumor (yes/no) | 220/153/3 | – | – |
| Deceased (deceased/alive) | 179/197 | 120/102 | 0.6192b |
| Overall survival (months; means ± SD) | 58.33±56.59 | 73.57±40.16 | 0.0001a |
Clinical characteristics between TCGA and E-MTAB-4725 were compared using the
a
Student's t-test or
b
Chi-square test. SD, standard deviation. The hyphen (−) indicates that data were unavailable. TCGA, The Cancer Genome Atlas.