Table 3 Multiple logistic regression for factors associated with grade 4 Lymphopenia

Thoracic TVB

 Thoracic vertebrae V20

1.02(0.99–1.04)

0.011

-

0.18

 Thoracic vertebrae V10

1.03(1.01–1.06)

0.012

188.8

0.005

 Thoracic vertebrae V5

1.03(1.02–1.06)

0.012

185.5

0.0012

 Mean thoracic vertebrae dose

1.11(1.03–1.20)

0.038

189.4

0.0069

Mean cardiopulmonary dose

1.32(1.12–1.56)

0.084

185.0

0.00083

Mean whole body dose

1.41(1.04–1.92)

0.16

192.8

0.028

Ribs

 V5

1.03(0.99–1.04)

0.012

-

0.15

 Mean ribs dose

1.33(1.09–1.63)

0.1

189.9

0.0055

Spleen dose

 V30

1.02(0.99–1.04)

0.012

-

0.12

 V20

1.02(1.00-1.03)

0.008

192.6

0.017

 V10

1.02(1.01–1.03)

0.006

188.9

0.003

 V5

1.02(1.01–1.03)

0.006

184.7

0.0045

Mean spleen dose

1.11(1.05–1.18)

0.03

185.6

0.00042