Table 1 Demographic and clinical characteristics (N = 196)

Age (years)

55.4 ± 8.7 (29–76)

Marital status

 Single

9

5.0

 Married

164

83.7

 Widowed

16

8.2

 Divorced/separated

7

3.6

Education

  ≤ High school graduate

106

54.1

 College graduate

77

39.3

  ≥ Graduate degree

13

6.63

Employment

 Full-time

44

22.4

 Part-time

12

6.1

 Not employed

108

55.1

Religion

 Yes

141

71.9

 No

55

28.1

Cancer stage

 Stage I

91

46.7

 Stage II

77

39.5

 Stage III

25

12.8

 Stage IV

2

1.03

Operation type

 Breast-conserving surgery

88

44.9

 Mastectomy

108

55.1

Time since diagnosis (years)

7.1 ± 4.6 (1.1–21.6)

Cancer Treatment

 Chemo-radiation

106

57.6

 Chemotherapy only

34

18.5

 Radiation therapy only

26

14.1

 Surgery only

18

9.8

K-PFS: Korean-Pittsburgh Fatigability Scale

 K-PFS Physical score

20.5 ± 9.1 (2–47)

 K-PFS Mental score

14.4 ± 9.6 (0–50)