表 1.
纳入研究的基本特征
General characteristics of the included studies
| Author | Time | Sample size | Cancer | Control | TNM | Tissue | Country | STROBE |
| (M+/M-) | (M+/M-) | |||||||
| BLAF: bronchoalveolar lavage fluid; NA: not available; M+/M-: methylation positive/methylation negative; TNM: tumor node metastasis; STROBE: strengthening the Reporting of Observational Studies in Epidemiology. | ||||||||
| Wang N[5] | 2018 | 120 | 57/23 | 1/39 | Ⅰ-Ⅳ | Serum | China | 9 |
| Rong QP[6] | 2018 | 48 | 18/20 | 2/8 | Ⅲ/Ⅳ | Serum | China | 11 |
| Zhang YM[7] | 2016 | 277 | 98/32 | 34/113 | NA | BLAF | China | 9 |
| Ren M[8] | 2017 | 253 | 79/44 | 10/120 | Ⅰ-Ⅳ | BLAF | China | 14 |
| Schmidt B[9] | 2010 | 523 | 190/91 | 12/230 | Ⅰ-Ⅳ | BLAF | German | 12 |
| Kneip C[10] | 2011 | 343 | 112/76 | 16/139 | Ⅰ-Ⅳ | Serum | German | 14 |
| Dietrich D[11] | 2012 | 204 | 78/22 | 4/100 | Ⅰ-Ⅳ | BLAF | German | 13 |
| Konecny M[12] | 2016 | 63 | 31/6 | 4/22 | NA | BLAF | German | 11 |
| Konecny M[12] | 2016 | 59 | 20/11 | 6/22 | NA | Serum | German | 13 |
| Wang CH[13] | 2016 | 243 | 79/44 | 8/112 | NA | BLAF | China | 8 |
| Ilse P[14] | 2014 | 118 | 48/27 | 1/42 | NA | BLAF | German | 12 |
| Dietrich D[15] | 2013 | 114 | 7/51 | 0/56 | NA | Pleural effusion | German | 14 |
| Li SF[16] | 2014 | 47 | 10/18 | 0/9 | NA | Pleural effusion | China | 10 |
| Ilse P[17] | 2013 | 719 | 138/138 | 70/373 | NA | Pleural effusion | German | 13 |