Table 3. Characteristics of datasets collected from public databases.
| First author (publication year) | Country | Dataset | Platform | Cancer | Non-tumor | ||||
|---|---|---|---|---|---|---|---|---|---|
| N | Mean | SD | N | Mean | SD | ||||
| Hoshida Y et al. (2008) | USA | GEO: GSE10143 | Illumina GPL5474 | 80 | 11.56476 | 1.234071 | 307 | 9.681402 | 1.612077 |
| Yamada T et al. (2010) | Japan | GEO: GSE12941 | Affymetrix GPL5175 | 10 | 7.742833 | 0.451358 | 10 | 6.916281 | 0.289366 |
| Ozturk M et al. (2013) | Turkey | GEO: GSE17548 | Affymetrix GPL570 | 17 | 7.689396 | 0.534538 | 20 | 7.010264 | 0.419098 |
| Archer KJ et al. (2009) | USA | GEO: GSE17967 | Affymetrix GPL571 | 16 | 5.457902 | 0.224498 | 47 | 5.432252 | 0.335892 |
| Zhang HH et al. (2014) | USA | GEO: GSE22405 | Affymetrix GPL10553 | 24 | 6.385462 | 0.363429 | 24 | 6.316088 | 0.292544 |
| Zhang C et al. (2011) | USA | GEO: GSE25097 | Rosetta GPL10687 | 268 | 0.838214 | 0.378756 | 289 | 0.416037 | 0.122694 |
| Xing J et al. (2013) | China | GEO: GSE25599 | Illumina GPL9052 | 10 | 3.244943 | 0.671844 | 10 | 2.143752 | 0.319294 |
| Yang F et al. (2011) | China | GEO: GSE27462 | Arraystar GPL11269 | 5 | 7.140901 | 0.933327 | 5 | 6.30459 | 0.751626 |
| Lim HY et al.(2012) | South Korea | GEO: GSE36376 | Illumina GPL10558 | 240 | 7.574646 | 0.378203 | 193 | 7.045063 | 0.201359 |
| Kim J et al. (2014) | USA | GEO: GSE39791 | Illumina GPL10558 | 72 | 7.443333 | 0.361277 | 72 | 7.144306 | 0.235347 |
| Ueda T et al. (2013) | Japan | GEO: GSE44074 | Kanazawa GPL13536 | 33 | 1.27919 | 0.383991 | 70 | 1.182476 | 0.812676 |
| Wei L et al. (2013) | China | GEO: GSE45114 | CapitalBio GPL5918 | 24 | 1.325073 | 0.268345 | 25 | 0.967549 | 0.128934 |
| Jeng Y et al. (2013) | Taiwan | GEO: GSE46408 | Agilent GPL4133 | 6 | 9.579482 | 0.587683 | 6 | 8.377478 | 0.449755 |
| Chen X et al. (2014) | USA | GEO: GSE46444 | Illumina GPL13369 | 88 | 7.143259 | 1.327809 | 48 | 6.98491 | 1.454663 |
| Wang K et al. (2013) | China | GEO: GSE49713 | Arraystar GPL11269 | 5 | 7.124351 | 0.441245 | 5 | 5.535282 | 0.400369 |
| Geffers R et al. (2013) | Germany | GEO: GSE50579 | Agilent GPL14550 | 67 | 9.499062 | 0.624212 | 10 | 8.586041 | 0.373536 |
| Villa E et al. (2014) | Italy | GEO: GSE54236 | Agilent GPL6480 | 81 | 9.92021 | 0.665807 | 80 | 9.4993 | 0.546339 |
| Melis M et al. (2014) | USA | GEO: GSE55092 | Affymetrix GPL570 | 49 | 7.458387 | 0.616179 | 91 | 6.286526 | 0.60129 |
| Hoshida Y et al. (2014) | USA | GEO: GSE56140 | Illumina GPL18461 | 35 | 8.10847 | 0.32 | 34 | 7.678189 | 0.217079 |
| Mah W et al. (2014) | Singapore | GEO: GSE57957 | Illumina GPL10558 | 39 | 8.869112 | 0.369617 | 39 | 8.37716 | 0.257911 |
| Udali S et al. (2015) | Italy | GEO: GSE59259 | NimbleGen GPL18451 | 8 | 13.22883 | 0.281264 | 8 | 12.55599 | 0.279291 |
| Kao KJ et al. (2015) | Taiwan | GEO: GSE60502 | Affymetrix GPL96 | 18 | 7.425576 | 1.055023 | 18 | 5.531417 | 0.995259 |
| Zucman-Rossi J et al. (2014) | France | GEO: GSE62232 | Affymetrix GPL570 | 81 | 7.008307 | 0.476591 | 10 | 6.227086 | 0.257979 |
| Sorenson EC et al. (2017) | USA | GEO: GSE63018 | Illumina GPL16791 | 10 | 11.29778 | 0.353735 | 9 | 11.33185 | 0.316222 |
| Makowska Z et al. (2016) | Switzerland | GEO: GSE64041 | Affymetrix GPL6244 | 60 | 8.627706 | 0.445288 | 65 | 8.042826 | 0.255531 |
| Tao Y et al. (2015) | China | GEO: GSE74656 | Affymetrix GPL16043 | 5 | 6.26234 | 0.491062 | 5 | 5.410328 | 0.223788 |
| Grinchuk OV et al. (2017) | Singapore | GEO: GSE76427 | Illumina GPL10558 | 115 | 8.325151 | 0.398464 | 52 | 7.843747 | 0.317144 |
| Jin G et al. (2017) | China | GEO: GSE77509 | Illumina GPL16791 | 20 | 9.487431 | 0.532998 | 20 | 8.588088 | 0.320587 |
| Wijetunga NA et al. (2016) | USA | GEO: GSE82177 | Illumina GPL11154 | 5 | 1.467352 | 0.301874 | 12 | 1.933381 | 0.931835 |
| Tu X et al. (2017) | China | GEO: GSE84005 | Affymetrix GPL5175 | 38 | 7.528008 | 0.610855 | 38 | 6.635592 | 0.355587 |
| Wurmbach E et al. (2007) | USA | Oncomine: Wurmbach Liver | Affymetrix GPL570 | 35 | 5.919037 | 0.545655 | 40 | 5.059372 | 0.269329 |
| Mas VR et al. (2009) | USA | Oncomine: Mas Liver | Affymetrix GPL571 | 38 | 5.842322 | 0.548437 | 77 | 5.777008 | 0.347634 |
| Roessler S et al.1 (2010) | USA | Oncomine: Roessler liver 1 | Affymetrix GPL571 | 22 | 5.611227 | 0.566651 | 21 | 4.954476 | 0.287342 |
| Roessler S et al.2 (2010) | USA | Oncomine: Roessler liver 2 | Affymetrix GPL3921 | 225 | 5.4402 | 0.703646 | 220 | 4.819882 | 0.365017 |
| Nojima M et al. (2017) | Japan | Arrayexpress: E-MTAB-4171 | Agilent A-MEXP-2320 | 15 | 5.237674 | 1.130954 | 15 | 6.042401 | 1.132882 |