a.
| Author | Year | Ethnicity | Age | Cancer/ | Type | Stage | Case | Control | LN3 metastases (+/−) | Status | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Normal | I/II/III/IV | P1 | N2 | P | N | |||||||
| Fang M | 2008 | Chinese | 45-77 | 38/38 | NSCLC4 | 6/15/17/0 | 27 | 11 | 10 | 28 | 27/11 | Untreated |
| Guo SG | 2010 | Chinese | 31-72 | 60/10 | NSCLC | 12/30/18/0 | 41 | 19 | 3 | 7 | 48/12 | Untreated |
| Liu Y | 2012 | Chinese | 59.8±8.6 | 68/68 | NSCLC | 18/25/25/0 | 49 | 19 | 18 | 50 | NR5 | Untreated |
| Sun LL | 2011 | Chinese | 47-73 | 30/30 | NSCLC | 12/8/10/0 | 21 | 9 | 6 | 24 | 11/19 | Untreated |
| Xu YJ | 2011 | Chinese | 28-75 | 100/100 | NSCLC | 15/41/44/0 | 71 | 29 | 25 | 75 | 69/31 | Untreated |
| Yang Y | 2009 | Chinese | 57.8±5.7 | 40/40 | NSCLC | 15/17/8 | 34 | 6 | 16 | 24 | 25/15 | Untreated |
| Zhang ZH | 2010 | Chinese | 45-77 | 52/34 | NSCLC | 9/22/21/0 | 36 | 16 | 8 | 26 | 35/17 | Untreated |