Table 1.

Variable Description for the BCEI Data

	Variable Name	Type	Number of Levels or Values	Description
1	age	continuous	51	age at enrollment
2	race	binary	7	1 - Black/African American; 2 - Asian;
				3 - Caucasian; 4 - Hispanic/Latin; etc.
3	language	nominal	5	1 - English; 2 - Spanish; etc.
4	education	ordinal	5	education level: 1 - Grade school;
				2 - High school; etc.
5	religion	nominal	22	1 - Atheist; 2 - Buddhist; 3 - Catholic;
				4 - Christian; 5 - Jehovah Witness; etc.
6	marital	nominal	6	marital status: 1 - Never Married;
				2 - Married; 3 - Living with partner; etc.
7	family	nominal	14	family type: 1 - spouse; 2 - parents;
				3 - children; etc.
8	numfamily	count	7	number of family members
9	employment	nominal	4	1 - full time; 2 - part time;
				3 - retired; 0 - others.
10	income	ordinal	7	annual family income level: 1 - $10,000 or less;
				2 - $10,000-$20,000; 3 - $20,000-$30,000; etc.
11	other.cancer	binary	2	0 - none; 1 - yes
12	surgery	nominal	3	surgery type: 1 - lumpectomy;
				2 - mastectomy; 0 - others
13	chemotherapy	binary	2	0 - no; 1 - yes
14	radiotherapy	binary	2	0 - no; 1 - yes
15	rad.type	nominal	3	radiation type: 0 - none; 1 - primary;
				2 - postoperative.
16	hormonal	binary	2	0 - no; 1 - yes
17	type.horm	nominal	3	hormonal type: 0 - none; 1 - Tamoxifen; 2 - others
18	fatigue	binary	2	0 - no; 1 - yes
19	medfat	binary	2	any medicine for fatigue? 0 - no; 1 - yes
20	support	binary	2	currently with a breast cancer support group?
				0 - no; 1 - yes
21	nmth.diag	continuous	20	months since diagnosis