Annelotte van Bommel

88 Table 3. Univariable and multivariable analyses of hospital organization factors affecting the use of immediate breast reconstruction after mastectomy for 14,491 patients with invasive breast cancer. Immediate breast reconstruction (invasive breast cancer) (n=14,491) Univariable Multivariable* No % Yes % Total OR 95% CI OR 95% CI Hospital type District hospital 3,582 88.58 462 11.42 4,044 ref ref Teaching hospital 7,232 83.86 1,392 16.14 8,624 1.49 1.33-1.67 0.97 0.83-1.14 University hospital 1,042 80.22 257 19.78 1,299 1.91 1.62-2.26 0.65 0.45-0.95 Cancer specific hospital 200 38.17 324 61.83 524 12.56 10.27-15.36 13.39 9.76-18.38 Volume (# diagnosis annually) Group 1 (1/150) 2,579 88.32 341 11.68 2,920 ref ref Group 2 (150/300) 6,596 82.21 1,427 17.79 8,023 1.64 1.44-1.86 1.20 0.97-1.48 Group 3 (>300) ub=436 2,881 81.20 667 18.80 3,548 1.75 1.52-2.02 1.29 1.00-1.65 %mastectomies (of all surgical excisions) Group 1 (0/30) 537 87.75 75 12.25 612 ref ref Group 2 (30/50)) 7,861 82.70 1,644 17.30 9,505 1.50 1.17-1.92 1.15 0.87-1.54 Group 3 (50/90) 3,658 83.63 716 16.37 4,374 1.40 1.09-1.81 1.50 1.11-2.02 # of weekly MDT Group 1 (1) 3,550 84.24 664 15.76 4,214 0.65 0.57-0.74 0.74 0.61-0.89 Group 2 (2) 2,340 87.94 321 12.06 2,661 0.48 0.41-0.56 0.66 0.54-0.82 Group 3 (>2) ub=7 1,722 77.67 495 22.33 2,217 ref ref Group 4 (unknown) 4,444 82.31 955 17.69 5,399 0.75 0.66-0.84 0.48 0.39-0.59