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Table 2 Characteristics of breast cancer patients diagnosed in 2005, 2008 and 2011 in Catalonia, Spain, according to type of surgery

From: Trends in the surgical procedures of women with incident breast cancer in Catalonia, Spain, over a 7-year period (2005–2011)

  Conservative surgery Radical surgery
2005 2008 2011   2005 2008 2011  
n (%) n (%) n (%) β* (95% CI) n (%) n (%) n (%) β* (95% CI)
Age              
  ≤49 528 (26.2) 614 (26.3) 583 (23.7) -0.017 (-0.034; -0.001) 267 (28.0) 301 (34.0) 293 (33.8) 0.030 (0.008;0.053)
  50- 69 1005 (49.8) 1229 (52.7) 1343 (54.5) 0.015 (0.006; 0.024) 339 (35.6) 282 (31.9) 299 (34.5) -0.006 (-0.027; 0.016)
  ≥ 70 485 (24.0) 490 (21.0) 537 (21.8) -0.016 (-0.034; 0.003) 347 (36.4) 302 (34.1) 275 (31.7) -0.023 (-0.044;-0.002)
Stage              cp  
  Local 1849 (91.6) 2072 (88.8) 2039 (82.8) -0.016 (-0.020; -0.013) 864 (90.7) 722 (81.6) 646 (74.5) -0.033 (-0.040;-0.026)
  Regional 153 (7.6) 250 (10.7) 398 (16.2) 0.128 (0.100; 0.157) 73 (7.7) 131 (14.8) 184 (21.2) 0.161 (0.122; 0.201)
  Distant 16 (0.8) 11 (0.5) 26 (1.1) 0.064 (-0.047; 0.179) 16 (1.7) 32 (3.6) 37 (4.3) 0.141 (0.054; 0.230)
Charlson Comorbidity Index               
  No comorbidity 1718 (85.1) 1947 (83.5) 1995 (81.0) -0.008 (-0.013; -0.004) 772 (81.0) 704 (79.5) 679 (78.3) -0.006 (-0.013;0.002)
  Low comorbidity 243 (12.0) 305 (13.1) 355 (14.4) 0.030 (0.005; 0.055) 132 (13.9) 135 (15.3) 130 (15.0) 0.013 (-0.024;0.050)
  High comorbidity 57 (2.8) 81 (3.5) 113 (4.6) 0.082 (0.031; 0.134) 49 (5.1) 46 (5.2) 58 (6.7) 0.045 (-0.018;0.108)
Type of surgery               
  Tumorectomy/Partial mastectomy 2018 (100.0) 2333 (100.0) 2463 (100.0)   - - - - - -  
  Simple mastectomy - - - - - -   812 (85.2) 757 (85.5) 719 (82.9) -0.004 (-0.011;0.002)
  Radical mastectomy - - - - - -   124 (13.0) 107 (12.1) 110 (12.7) -0.005 (-0.045;0.306)
  Subcutaneous mastectomy - - - - - -   17 (1.8) 21 (2.4) 38 (4.4) 0.157 (0.064; 0.254)
Lymph node removal 1556 (77.1) 1990 (85.3) 2122 (86.2) 0.016 (0.012; 0.021) 830 (87.1) 783 (88.5) 776 (89.5) 0.005 (-0.001;0.010)
Type of lymph node removal 1               
  Simple 759 (48.8) 1349 (67.8) 1516 (71.4) 0.070 (0.061; 0.079) 528 (63.6) 559 (71.4) 526 (67.8) 0.015 (0.002;0.027)
  Radical 797 (51.2) 641 (32.2) 606 (28.6) -0.082 (-0.097;-0.067) 302 (36.4) 224 (28.6) 250 (32.2) -0.018 (-0.042;0.007)
Hospital complexity               
  Low 309 (15.3) 422 (18.1) 466 (18.9) 0.034 (0.012; 0.055) 172 (18.0) 138 (15.6) 153 (17.6) -0.005 (-0.039;0.029)
  Medium 892 (44.2) 1068 (45.8) 1193 (48.4) 0.015 (0.005; 0.026) 405 (42.5) 390 (44.1) 420 (48.4) 0.022 (0.005;0.039)
  High 817 (40.5) 843 (36.1) 804 (32.6) -0.036 (-0.049;-0.023) 376 (39.5) 357 (40.3) 294 (33.9) -0.023 (-0.043;-0.004)
In-hospital deaths 2 1 (0.0) 0 (0.0) 2 (0.1) 0.144 (-0.355; 0.749) 4 (0.4) 1 (0.1) 1 (0.1) -0.260 (-0.718; 0.088)
Discharge destination               
  Domicile 2008 (99.5) 2328 (99.8) 2451 (99.5) 0 (-0.001; 0.001) 943 (99.0) 872 (98.5) 848 (97.8) -0.002 (-0.004; 0.001)
  With support 9 (0.4) 4 (0.2) 11 (0.4) 0.009 (-0.156; 0.178) 8 (0.8) 11 (1.2) 19 (2.2) 0.164 (0.032;0.304)
  Other3 1 (0.0) 1 (0.0) 1 (0.0) -0.033 (-0.535; 0.469) 2 (0.2) 2 (0.2) 0 (0.0) -0.260 (-0.850;0.162)
Total 4 2018 (67.9) 2333 (72.5) 2463 (74.0) 0.014 (0.009; 0.019) 953 (32.1) 885 (27.5) 867 (26.0) -0.035 (-0.048;-0.022)
  1. *β is the slope of the log-binomial model used to measure the temporal trend; 95% CI: 95%Confidence Interval; In bold, statistically significant; 1Percentages were calculated taking into account the total number of lymph node removal; 2Mortality within 30 days after admission; 3Includes hospital mortality during hospitalization (in-hospital mortality); 4Percentages were calculated taking into account the total number of surgical patients in the respective years.