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

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

	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)

Abbreviation: BCS, breast-conserving surgery; CI, confidence interval
* All analyses weighted to account for differential selection by clinical factors of non-response.

ISSN: 1472-6963