Table 3. Univariate (Two-Sample t-test or Analysis of Variance) and Multivariable (Linear Regression) Analyses of Factors Associated with Knowledge.

			Multivariable
Characteristic	Mean knowledge (% correct)	Univariate p value	Regression coefficient	p Value
Age at diagnosis, y
< 50	59.1	<0.0001	10.9	<0.0001
>=50*	48.5
Race
White	54.6	0.0001	8.4	0.001
Non-white*	43.1
Education
< College graduate	46.3	<0.0001	-6.3	0.002
> = College graduate*	56.3
Annual income
< $60,000	43.9	<0.0001	-6.7	0.003
>= $60,000*	57.0
Marital status
Partnered	54.8	0.004	2.9	0.18
Single/divorced/widowed*	48.1
Stage
I	55.2	0.002	4.5	0.02
II*	48.8
Surgical treatment
Partial mastectomy	55.7	0.0002	7.7	0.0001
Mastectomy*	47.8
Site		0.36
1	50.2
2	55.1
3	51.8
4	53.4
Months since diagnosis
< 24	56.4	0.02	5.1	0.01
>= 24*	51.1

^*Referent group.