TABLE 2.

COMPARISON OF NONFATIGUED AND FATIGUED BREAST CANCER SURVIVORS

	NONFATIGUED (N = 311)		FATIGUED (N = 129)
CHARACTERISTIC	n	%	n	%	p
Age at diagnosis (years)					< 0.001
65–74	269	86	92	71
75–85	39	13	37	29
Older than 85	3	1	–	–
BL fatiguea					< 0.001
0–25	2	1	6	5
26–50	28	9	40	31
51–75	143	46	65	50
75–100	137	44	17	13
Missing data	1	< 1	1	1
BL physical activity					0.682
Less than 500 MET minutes per week	100	32	53	41
500–1,000 MET minutes per week	66	21	25	19
More than 1,000 MET minutes per week	105	34	44	34
Missing data	40	13	7	5
BL sleep distb					< 0.001
0–5	123	40	26	20
6–10	110	35	51	40
11–15	52	17	36	28
16–20	12	4	15	12
Missing data	14	5	1	1
Depressiona					0.001
0–25	–	–	1	1
26–50	7	2	11	9
51–75	50	16	30	23
76–100	249	80	87	67
Missing data	5	2	–	–
Education level					0.226
High school or less/GED	46	15	29	22
More than high school, less than bachelor’s degree	100	32	42	33
Bachelor’s degree	37	12	13	10
More than bachelor’s degree	128	41	45	35
Ethnicity					0.47
White	290	93	125	97
African American	10	3	2	2
Hispanic/Latino	3	1	1	1
Other	8	3	1	1
Income ($)					0.137
0–34,999	95	31	48	37
35,000–74,999	144	46	63	49
More than 75,000	64	21	17	13
Do not know	8	3	1	1
Modified CCI score					0.426
2	238	77	94	73
3	62	20	27	21
4 or greater	11	4	8	6
Paina					0.001
0–25	5	2	8	6
26–50	27	9	17	13
51–75	87	28	47	36
76–100	190	61	55	43
Missing data	2	1	2	2
Physical functiona					< 0.001
0–25	1	< 1	6	5
26–50	7	2	4	3
51–75	41	13	29	22
76–100	258	83	87	67
Missing data	4	1	3	2
Stage at diagnosis					0.074
Local	245	79	105	81
Regional	59	19	21	16
Distant	–	–	2	2
Missing data	7	2	1	1

^aMeasured using the SF-36^®; possible scores range from 0 to 100, with higher scores indicating a more favorable health state. For fatigue, scores less than 50 indicate fatigue, whereas scores of 50 or greater indicate nonfatigue.

^bMeasured using the Women’s Health Initiative Insomnia Rating Scale; total possible scores range from 0 to 20, with 9 used as the threshold for sleep disturbance and higher scores indicating greater sleep disturbance.

BL—baseline; CCI—Charlson Comorbidity Index; MET—metabolic equivalent; sleep dist—sleep disturbance

Note. Possible CCI scores range from 0 to 15, with higher scores indicating greater morbidity. A diagnosed cancer is scored as 2 points; as a result, all participants in the current study had a minimum score of 2 because an inclusion criterion was a breast cancer diagnosis.

Note. Because of rounding, percentages may not total 100.