Table 1 Study characteristics, basic demographics and clinical characteristics
Author/s (year) | Study design | Country | Number of patients | Age (years) | Sex (M/F) | Tumor stage | Lymph node stage | Tumor grade | Follow-up (months) | Outcome/s | NOS | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SBCa | Non-SBCa | |||||||||||
Jiang et al. (2020) | Retrospective,Single center | China | 42 | 187 | 66.7 ± 9.8 | M (117) F (112) | Ta-1 (78) T2 (114) T3 (37) | N0 (229) | Low (37) High (192) | 40 (IQR24,56) | CSS OS | 8 |
Elalouf et al. (2013) | Retrospective,Single center | French | 85 | 152 | 68.5 ± 10.4 | M (161) F (76) | T1 (139) T2 (22) T3–4 (76) | N0 (67) Nx (147) N+ (23) | Low (43) High (194) | 44 (IQR24,73) | CSS | 7 |
Yamashita et al. (2016) | Retrospective,Multi center | Japan | 205 | 329 | 72 (30–91) | M (363) F (171) | Ta-1 (219) T2–4 (315) | N0 (244) Nx (239) N+ (51) | Low (26) Intermediate (218) High (273) Unknown (48) | 47 (1–78) | CSS OS | 7 |
Lee et al. (2017) | Retrospective,Multi center | Korea | 231 | 529 | 65.6 ± 10.0; 65.2 ± 9.5 | M (561) F (199) | Ta (64) T1 (264) T2 (127) T3 (296) T4 (9) | N0 (26) Nx (711) N+ (23) | Low (229) High (531) | 45 (IQR3,76) | CSS OS | 7 |
Elawdy et al. (2017) | Retrospective,Single center | Egypt | 139 | 158 | 59.0 ± 11.0 | M (262) F (35) | T1 (194) T2 (43) T3 (59) T4 (1) | Nx(297) | Low (13) Intermediate (184) High (100) | 34 (6–300) | CSS | 6 |