Table 1 Basic characteristics of 7 datasets
Characteristics | Analysis | Validation | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Â | TCGA | GSE10072 | GSE83213 | GSE2088 | GSE32863 | GSE43458 | GSE43458 |
| Â | Platform | Illumina | Affymetrix | Illumina | Illumina | Illumina | Affymetrix | Affymetrix |
| Â | Cancer/Normal (Total) | 539/59 (598) | 50/57 (107) | 11/46 (57) | 57/30 (87) | 58/58 (116) | 80/30 (110) | 25/25 (50) |
| Â | Male (%) | 107 (18) | 69 (64) | 28 (50) | Unknown | 26 (22) | Unknown | Unknown |
Race | Asian | 8 | 0 | 0 | 0 | 44 | 0 | 0 |
| Â | Black | 59 | 0 | 0 | 0 | 0 | 0 | 0 |
| Â | White | 446 | 0 | 0 | 0 | 72 | 0 | 0 |
| Â | Unreported | 66 | 107 | 57 | 87 | 0 | 110 | 50 |
| Â | Mean age | 65 | 56 | Unknown | Unknown | 68 | Unknown | 58 |
| Â | Never-smoker (%) | 34 (6) | 36 (34) | Unknown | Unknown | Unknown | 70 (64) | Unknown |