Annelotte van Bommel

152 Table 1. Baseline respondents’ characteristics (n=511) categorized by surgical treatment (mastectomy without immediate breast reconstruction, n=281; mastectomy with immediate breast reconstruction, n=164). (continued) Mastectomy (n=281) Mastectomy with IBR (n=164) Total (n=445) P-value n % n % n % II 103 37% 50 31% 153 34% III 62 22% 4 2% 66 15% Treatment characteristics Type of breast reconstruction 1 Tissue expander or immediate implant 146 89% 146 89% Latissimus dorsi flap with implant 9 6% 9 6% Autologous reconstruction 9 6% 9 6% Nipple reconstruction 1 No reconstruction 94 57% 94 57% Nipple reconstruction*** 47 29% 47 29% Nipple sparing surgery 23 14% 23 14% Radiotherapy Yes 95 34% 25 15% 120 27% <0.001 Chemotherapy Yes 143 51% 71 43% 214 48% 0.122 Hospital characteristics Hospital General 133 47% 60 37% 193 43% 0.120 Educational 128 46% 80 49% 208 47% Academic 20 7% 24 15% 44 10% Hospital volume**** Low 50 18% 19 12% 69 16% 0.001 Intermediate 106 38% 43 26% 149 34% High 125 45% 102 62% 227 51% 1. Self-reported data from the patient survey *Socio-economicstatus(SES)ofthepatientswasbasedonfour-digitpostalcodeattimeofsurgery.SES-scoresareprovidedbytheNetherlands InstituteforSocialResearch (SociaalCultureelPlanbureau)anddivided intothreegroupsbasedonthedeliveredranknumbers: low(1st-3rddeciles), intermediate(4th-7th)andhigh(8th-10th)SES. ** Stage according to American Joint Commission on Cancer TNM classification. *** Nipple reconstruction, either tattooing of the nipple-areola complex, nipple reconstruction or a combination of the two techniques. **** Hospital volume was calculated by number of mastectomies: number of surgical treated breast cancer patients per year (average over 2012-2014), categorized as low (<150), middle (150-249), and high (>250) volume.