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Table 1 Characteristics of the included studies

From: Clinical efficacy of radical nephrectomy versus nephron-sparing surgery on localized renal cell carcinoma

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)
  1. SD, Standard deviation; RN, Radical nephrectomy; NSS, Nephron-sparing surgery; *, Mean; #, Median; a, RN group; b, NSS group; NA, Not clear.