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Table 1 Patient characteristics at baseline

From: Feasibility of isometric spinal muscle training in patients with bone metastases under radiation therapy - first results of a randomized pilot trial

 

Intervention group (n = 30)

Control group (n = 30)

p-value

n

%

n

%

 

Age (years)

 Mean (SD)

61.3 (10.1)

 

64.1 (10.9)

 

0.304

Gender

 Male

14

46.7

19

63.3

0.195

 Female

16

53.3

11

36.7

 

Weight (kg, SD)

74.3 (14.7)

 

72.7 (12.1)

 

0.553

Height (cm, SD)

171.2 (8.3)

 

172.3 (7.5)

 

0.906

Body mass index

 Mean (SD)

25.3 (4.5)

 

24.4 (3.6)

 

0.559

Karnofsky-index (median, range)

80 (70–100)

 

80 (70–100)

 

1.000

Primary site

 Lung cancer

12

9.2

8

26.6

0.320

 Breast cancer

5

16.7

6

20.1

0.542

 Prostate cancer

5

16.7

9

30.1

0.156

 Melanoma

1

3.3

1

3.3

1.000

 Renal cancer

1

3.3

2

6.7

0.875

 Other

6

20.1

4

13.4

0.325

Localization metastases

    

0.717

 Thoracic

17

56.7

14

46.7

 

 Lumbar

9

30.0

13

43.3

 

 Thoracic and lumbar

2

6.7

2

6.7

 

 Sacrum

2

6.7

1

3.3

 

Number metastases

    

0.257

 Mean (range)

1.4 (2–4)

 

1.7 (1–5)

  

 Solitary

22

73.3

18

60.0

 

 Multiple

8

26.7

12

40.0

 

Type of metastases

    

0.961

 Mixed

2

6.7

2

6.7

1.000

 Osteoblast

9

30.0

10

33.3

0.956

 Osteolytic

19

63.3

18

60.0

.0932

Distant metastases at baseline

     

 Visceral

12

40.0

5

16.7

0.045

 Brain

3

10.0

3

10.0

1.000

 Lung

7

23.3

4

13.3

0.320

 Tissue

8

26.7

6

20.0

0.542

Hormonotherapy

10

33.3

16

53.3

0.118

Immunotherapy

7

23.3

5

16.7

0.519

Chemotherapy

25

83.3

20

66.7

0.136

Pathological fracture at baseline

6

20.0

9

30.0

0.379

Neurological deficit

0

0.0

2

6.7

0.150

Orthopedic corset at baseline

7

23.3

5

16.7

0.519

Radiotherapy dose completed (Gy)

    

0.136

 Single dose (median, range)

3 (2–4)

 

3 (2–4)

 

1.000

 Cumulative dose (median, range)

30 (30–40)

 

30 (30–40)

 

1.000

  1. Abbreviations: SD Standard deviation.