Table 1.
Study and patient characteristics of the included studies.
| Author | Year | Study characteristics | Patient characteristics | ||||
|---|---|---|---|---|---|---|---|
| Country | Study design | Analysis | No. of patients | Mean age ± SD | Previous treatment | ||
| Bjerring et al. | 2020 | Denmark | Pro | PB | 39 | NA | Surg |
| El-Kholy et al. | 2019 | Egypt | Retro | PB | 34 | 58.3 ± 10.3 | Surg, Surg+Cx, Surg+Cx+RTx |
| Rayamajhi et al. | 2017 | America | Retro | PB | 39 | 64.5(55-78) | Surg, Surg+Cx, Surg+Cx+RTx |
| Jung et al. | 2016 | South Korea | Retro | PB | 110 | 62(35-84) | Surg, Surg+Cx, Surg+Cx+RTx |
| Peti et al. | 2014 | America | Retro | LB | 97 | 64 | Surg |
| Asagi et al. | 2013 | Japan | Retro | PB | 17 | NA | Surg |
| Kitajima et al. | 2009 | Japan | Retro | PB | 45 | 58(45-81) | Surg, Surg+Cx, Surg+Cx+RTx |
PB: patient-based; LB: lesion-based; Pro: prospective; Retro: retrospective; Surg: surgery; Cx: chemotherapy; RTx: radiotherap.