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Table 2 Analysis of outliers

From: Assessment of a model based optimization engine for volumetric modulated arc therapy for patients with advanced hepatocellular cancer

Organ

Number of structures in the model

Number of potential outliers

Reason

Average score

Small bowel

39

5

Cook's distance: 5

11.5 ± 8.9

SSR: 2

4.1 ± 0.9

Left kidney

45

9

Cook's distance: 9

11.5 ± 6.1

SSR: 4

4.0 ± 0.6

Right kidney

45

1

Cook's distance: 1

4.6

Left lung

35

19

Cook's distance: 19

19.1 ± 13.2

Right lung

35

13

Cook's distance: 12

7.9 ± 5.7

SSR: 3

4.0 ± 1.4

Esophagus

21

6

Cook's distance: 2

5.3 ± 0.6

SSR: 6

3.7 ± 0.8

Normal liver

45

7

Cook's distance: 7

11.2 ± 9.3

Spinal cord

45

6

Cook's distance: 6

8.2 ± 2.8

SSR: 2

3.4 ± 0.0

Stomach

24

6

Cook's distance: 3

6.5 ± 2.9

SSR: 4

3.3 ± 0.5

  1. SSR significant studentized residual.