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Table 1 Summary of patient characteristics

From: Efficacy and safety of CyberKnife radiosurgery in elderly patients with brain metastases: a retrospective clinical evaluation

 

Overall cohort

Number

97

Sex

 Male

58.8%

 Female

41.2%

Age at diagnosis in years

 Mean ± SD

70.1 ± 8.3

Age at 1. CK SRS in years

 Mean ± SD

73.3 ± 5.8

Years from diagnosis to CK SRS

 Mean ± SD

3.2 ± 5.0

Number of lesions per treatment

 1

53.0%

 2–4

39.9%

 5–7

6.6%

 8

0.5%

Number of treatments per patient

 1

79.5%

 2

16.4%

  > 2

4.1%

Pathologies

 Lung cancer

40.2%

 Renal cell carcinoma

22.7%

 Malignant melanoma

15.5%

 Breast cancer

10.3%

 Gastrointestinal tract

3.1%

 Others

3.1%

 Pharynx

2.1%

 Cancer of unknown pathology

2.1%

 Urothelial carcinoma

1.0%

Whole brain irradiation treatment (% of patients)

 Without

83 (85.6%)

 Prior to CK-SRS

10 (10.3%)

 After CK-SRS

3 (3.1%)

GPA Class

 2

5 (5.2%)

 3

58 (59.8%)

 4

34 (35.1%)

Extracranial metastases at diagnosis

 Yes

72 (74.2%)

 No

25 (25.8%)

  1. CK CyberKnife, SRS Stereotactic radiosurgery, GPA Graded prognostic assessment