Study [reference] | Age# years | Male¶ | Tumour histology | Disease stage | Tumour size+ cm median | Surgery | |||||
SQ | AD | Other | I | II | III | IV | |||||
Agarwal et al. [34] | 49% aged <70 years | 48 | 25 | 63 | 13 | 92 | 8 | 2.2 | 100 | ||
Borst et al. [16] | 71 (31–87) | 65 | 43 | 33 | 25 | 38 | 20 | 43 | 4.8 | 0 | |
de Jong et al. [23] | 62 (38–79) | 76 | 53 | 35 | 13 | 59 | 27 | 14 | 3.1 | 100 | |
Eschmann et al. [20] | 58 (30–78) | 76 | 47 | 29 | 24 | 100 | 5.0 | 60 | |||
Goodgame et al. [27] | 68 (33–83) | NR | 35 | 48 | 18 | 100 | 2.5 | 100 | |||
Higashi et al. [13] | 65 (46–85) | 44 | 73 | 27 | 83 | 2 | 15 | 2.5 | 100 | ||
Hoang et al. [29] | 64 (37–89) | 61 | 29 | 36 | 36 | 55 | 45 | NR | 22 | ||
Meert | 62 (29–86) | 66 | 25 | 53 | 23 | 12 | 4 | 28 | 57 | NR | 10 |
Port et al. [18] | 68 (46–81) | 41 | 8 | 88 | 5 | 81 | 8 | 11 | 1.5 | 94 | |
Sasaki et al. [19] | 62 (34–88) | 48 | 43 | 44 | 14 | 40 | 16 | 44 | 3.6 | 57 | |
van Baardwijk et al. [25] | 67 (43–85) | 67 | 48 | 39 | 13 | 54 | 17 | 28 | 3.5 | 100 | |
Vansteenkiste et al. [11] | 64 (33–83) | 89 | 55 | 23 | 23 | 37 | 15 | 48 | 3.9 | 73 |
Data are presented as median (range) or %, unless otherwise stated. SQ: squamous cell carcinoma; AD: adenocarcinoma; NR: not reported. #: age was provided as a continuous variable in 11 studies and as a binary variable in one study; ¶: patient sex was provided in 11 out of the 12 series; +: tumour size was provided in 10 out of the 12 series.