Table 1 Characteristics of the included studies
Study | Year of publication | Pathological stage | Tumor size (cm) | Duration of follow-up (months) | RN group | NSS group | ||||
|---|---|---|---|---|---|---|---|---|---|---|
Sample size | Age (mean ± SD) | Male (%) | Sample size | Age (mean ± SD) | Male (%) | |||||
Lau et al. [15] | 2000 | T1 | 3.3a*, 3.7b* | 120 | 164 | NA | NA | 164 | NA | NA |
Shinohara et al. [19] | 2000 | T1, T2, T3 | <4.0 | 12 to 131 | 51 | 59 | 37 (73) | 15 | 61 | 13 (87) |
Poulakis et al. [17] | 2003 | NP | 6.9a*, 3.9b* | 14 to 27 | 199 | 65.2 ± 11.0 | 121 (61) | 158 | 62.6 ± 9.9 | 110 (70) |
Patard et al. [16] | 2004 | T1 | 4.0# | 10 to 208 | 1075 | 60.0 ± 12.4 | 692 (64) | 379 | 59.7 ± 12.3 | 253 (67) |
Becker et al. [6] | 2006 | T1, T2, T3 | 3.7* | 66* | 369 | 60.2 | 225 (61) | 241 | 59.4 | 150 (62) |
Mitchell et al. [18] | 2006 | T1, T2, T3 | 5.2* | 44# | 66 | 66.9 | 44 (67) | 33 | 68.9 | 26 (79) |
Van Poppel et al. [21] | 2007 | T0,T1,T2,T3 | <4.0 | 60 | 273 | NA | 178 (65) | 268 | NA | 178 (66) |
Antonelli et al. [20] | 2012 | T1,T3 | >4.0 | 25 to 85 | 2345 | 62.5 | 1505 (64) | 1,266 | 60.1 | 881 (70) |
Huang et al. [23] | 2009 | NP | <4.0 | 48# | 2435 | NA | 1362 (56) | 556 | NA | 351 (63) |
Gratzke et al. [22] | 2009 | T1, T2, T3 | NA | 11 to 71 | 73 | NA | 46 (63) | 44 | 60.7 ± 12.4 | 29 (66) |