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Table 1 The BSI-values for the different skeletal regions

From: Analysis of regional bone scan index measurements for the survival of patients with prostate cancer

Covariate

Mean

Median

STD

Zeros

Unique

Age

77.02

78.00

9.13

0.00%

7.46%

BSI

2.23

0.56

3.18

0.00%

47.46%

C_Spine

0.03

0.00

0.09

77.16%

6.27%

Clavicle

0.02

0.00

0.05

72.99%

4.33%

Costae

0.30

0.00

0.56

52.09%

21.34%

Femur

0.11

0.00

0.28

69.25%

12.69%

Humerus

0.04

0.00

0.14

80.45%

7.91%

L_Spine

0.31

0.12

0.40

40.45%

20.15%

Pelvis

0.78

0.13

1.23

41.04%

32.39%

Sacrum

0.17

0.00

0.45

63.28%

14.18%

Scapula

0.10

0.00

0.17

58.21%

10.30%

Skull

0.10

0.00

0.33

68.81%

11.64%

Th_Spine

0.21

0.04

0.32

40.30%

16.72%

Sternum

0.04

0.00

0.07

60.90%

4.63%

  1. Besides the mean, median and standard deviation, the table also lists the fraction of zeros, patients with no metastases in that region, and the fraction of unique values, which in some respect describes the granularity of the data which can be relevant for machine learning.