Table 2.

Univariate Analysis of the Association Between Demographic Factors and Knowledge Score

	Surgeons, No. (%)
Characteristics	Total	High Level of Knowledge of CPM (4–5 Correct)	Odds Ratio (95% CI)	P Value
Age, y (n = 576)
30–40	85 (14.8)	54 (63.5)	1 [Reference]
41–50	176 (30.6)	108 (61.4)	0.91 (0.53–1.56)	.74
51–60	192 (33.3)	119 (62.0)	0.94 (0.55–1.59)	.81
>60	123 (21.3)	72 (58.5)	0.81 (0.46–1.43)	.47
Years in practice (n = 589)
<5	47 (8.0)	23 (48.9)	1 [Reference]
5–19	251 (42.6)	159 (63.4)	1.80 (0.96–3.38)	.07
≥20	291 (49.4)	178 (61.2)	1.64 (0.89–3.05)	.12
Work setting (n = 578)
Private practice	350 (60.6)	202 (57.7)	1 [Reference]
University/teaching hospital	163 (28.2)	114 (69.9)	1.70 (1.15–2.53)	.01
Other, please specify	65 (11.2)	38 (58.5)	1.03 (0.60–1.76)	.91
Location (n = 585)
New England	132 (22.6)	77 (58.3)	1 [Reference]
Midwest	144 (24.6)	83 (57.6)	0.97 (0.60–1.57)	.91
South	195 (33.3)	124 (63.6)	1.25 (0.79–1.96)	.34
West	114 (19.5)	73 (64.0)	1.27 (0.76–2.13)	.36
Proportion of practice devoted to breast disease (n = 580)
<20	32(5.5)	16 (50.0)	1 [Reference]
20–50	114 (19.7)	59 (51.7)	1.07 (0.49–2.35)	.86
50–80	87 (15.0)	50 (57.5)	1.35 (0.60–3.05)	.47
>80	347 (59.8)	233 (67.1)	2.04 (1.01–4.24)	.03
Level of postgraduate training (n = 576)
General and other surgery residency	393 (68.2)	230 (58.5)	1 [Reference]
Breast surgery/surgical oncology fellowship	183 (31.8)	130 (71.0)	1.74 (1.19–2.54)	.004
Sex (n = 574)
Male	352 (61.3)	228 (64.8)	1 [Reference]
Female	222 (38.7)	130 (58.6)	0.77 (0.54–1.09)	.13
No. of CPMs per mo (n = 573)
0	80 (13.9)	48 (60.0)	1 [Reference]
1	182 (31.8)	116 (63.7)	1.17 (0.68–2.01)	.57
2–4	233 (40.7)	149 (63.9)	1.18 (0.70–1.99)	.53
4–6	51 (8.9)	30 (58.8)	0.95 (0.47–1.95)	.89
>6	27 (4.7)	17 (63.0)	1.13 (0.46–2.79)	.79

Abbreviation: CPM, contralateral prophylactic mastectomy.