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Table 2 Univariate analyses* of factors associated with type of surgery

From: Association of shared decision-making with type of breast cancer surgery: a cross-sectional study

     Mastectomy (vs. BCS) N = 1,893
     % OR (95% CI)
Predisposing factors at the time of initial decision making   
   Age at diagnosis,   
<65 64.9 1(referent)
≥65 71.0 1.70(1.32-2.19)
   Educational level   
high school or less 67.2 1(referent)
college or higher 61.6 0.80(0.72-0.90)
   Marital status   
no spouse 66.2 1(referent)
married 65.2 0.93(0.81-1.08)
   Having a religion   
no 65.8 1(referent)
yes 65.2 0.99(0.86-1.14)
   Monthly income   
<US$3000 68.6 1(referent)
≥US$3000 61.8 0.69(0.63-0.77)
   Residential area   
rural 70.2 1(referent)
metropolitan area 64.7 0.78(0.65-0.94)
   Number of adults living together   
<3 65.6 1(referent)
≥3 64.5 0.96(0.85-1.07)
   Employment status   
unemployed 64.6 1(referent)
employed 65.2 1.07(0.96-1.19)
   Comorbidities   
none 63.6 1(referent)
≥1 66.8 1.17(1.05-1.29)
   Menopausal status   
premenopausal 63.5 1(referent)
postmenopausal 68.0 1.17(1.04-1.30)
   Estrogen receptor   
negative 65.8 1(referent)
positive 62.9 0.88(0.80-0.98)
   Progesterone receptor   
negative 65.1 1(referent)
positive 65.5 1.00(0.90-1.11)
   Stage   
0-IIa 61.5 1(referent)
IIb 84.3 3.68(3.11-4.35)
Shared decision making factors   
   Being patient's opinion respected in surgical treatment decision  
no 62.7 1(referent)
yes 73.3 1.48(1.24-1.76)
   Physician's giving information   
Breast surgery option   
no 74.5 1(referent)
yes 63.7 0.59(0.49-0.71)
Using radiotherapy (ref. no)   
no 67.1 1(referent)
yes 65.9 0.95(0.82-1.09)
Using chemotherapy (ref. no)   
no 44.0 1(referent)
yes 72.0 3.17(2.79-3.59)
   Using hormone therapy (ref. no)   
no 49.1 1(referent)
yes 73.4 2.41(2.15-2.69)
  1. Abbreviation: BCS, breast-conserving surgery; CI, confidence interval
  2. * All analyses weighted to account for differential selection by clinical factors of non-response.