Table 3 Characteristics of the included studies
References | Histology | TNM stage | NOS | |||||
|---|---|---|---|---|---|---|---|---|
Adenocarcinoma | Squamous carinoma | Other | I | II | III | IV | ||
Dong et al. [9] | 20 | 0 | 0 | 20 | 0 | 0 | 0 | 8 |
27 | 1 | 0 | 27 | 1 | 0 | 0 | ||
Patel et al. [4] | – | – | – | – | – | – | – | 7 |
– | – | – | – | – | – | – | ||
Drawbert et al. [2] | 2489 | 764 | 566 | – | – | – | – | 8 |
2476 | 760 | 583 | – | – | – | – | ||
Linden et al. [7] | – | – | – | – | – | – | – | 7 |
– | – | – | – | – | – | – | ||
Dong et al. [6] | 135 | 1 | – | 134 | 2 | – | – | 8 |
215 | 2 | – | 211 | 6 | – | – | ||
Towe et al. [8] | – | – | – | – | – | – | – | 7 |
– | – | – | – | – | – | – | ||
Geraci et al. [10] | 85 | 9 | 29 | 76 | 7 | 6 | – | 8 |
70 | 12 | 20 | 69 | 8 | 11 | – | ||