Table 1 Sociodemographic and clinical characteristics of participants and nonparticipants

Mean age (SD)

57.0 (11.3)

56.5 (9.3)

57.5 (12.7)

0.64

Age groups

0.02

 <40 years

7 (6%)

1 (1.9%)

6 (9.2%)

 40-49 years

24 (20.5%)

14 (26.9% )

10 (15.4%)

 50-59 years

37 (31.6%)

17 (32.7%)

20 (30.8%)

 60-69 years

31 (26.5%)

17 (32.7%)

14 (21.5%)

 ≥70 years

18 (15.4%)

3 (5.8%)

15 (23.1%)

Marital status

0.18

 Married/living with partner

78 (66.7%)

38 (73.1%)

40 (61.5%)

 Separated

3 (2.6%)

2 (3.8%)

1 (1.5%)

 Divorced

11 (9.4%)

6 (11.5%)

5 (7.7%)

 Widowed

18 (15.4%)

5 (9.6%)

13 (20%)

 Single

7 (6.0%)

1 (1.9%)

6 (9.2%)

Living status

0.01

 Alone

32 (27.4%)

8 (15.4% )

24 (36.9%)

 With others

85 (72.6%)

44 (84.6%)

41 (63.1%)

Travel distance

0.02

 Up to 30 minutes

30 (25.6% )

18 (34.6%)

12 (18,5%)

 Between 30 minutes and 1 h

67 (57.3%)

30 (57.7%)

37 (56.9%)

 More than 1 h

20 (17.1%)

4 (7.7%)

16 (24.6%)

Mean BMI [kg/m ² ] (SD)

26.3 (4.5)

25.7 (4.7)

26.9 (4.4)

0.14

Tumor size

0.047

 Tis

16 (13.7%)

8 (15.4%)

8 (12.3%)

 T1

66 (56.4%)

34 (65.4%)

32 (49.2%)

 T2

30 (25.6%)

9 (17.3%)

21 (32.3%)

 T3

5 (4.3%)

1 (1.9%)

4 (6.2%)

Nodal status

0.04

 Positive

34 (29.1%)

10 (19.2%)

24 (36.9%)

 Negative

83 (70.9%)

42 (80.8%)

41 (63.1%)

Tumor stage (UICC)

0.04

 0

15 (12.8%)

8 (15.4% )

7 (10.8%)

 1

55 (47.0%)

29 (55.8%)

26 (40.0%)

 2

35 (29.9%)

11 (21.2%)

24 (36.9%)

 3

12 (10.3%)

4 (7.7%)

8 (12.3%)

Number of comorbidities

0.07

 0

48 (41.0%)

25 (48.1%)

23 (35.4%)

 1

43 (36.8%)

20 (38.5%)

23 (35.4%)

 2

14 (12.0%)

3 (5.8%)

11 (16.9%)

 ≥3

12 (10.3%)

4 (7.7%)

8 (12.3%)

Chemotherapy

0.09

 yes

46 (39.3%)

16 (30.8%)

30 (46.2%)

 no

71 (60.7%)

36 (69.2%)

35 (53.8%)

Fatigue

 any

83 (70.9%)

43 (82.7%)

40 (61.5%)

0.01

 none

34 (29.1%)

9 (17.3%)

25 (38.5%)