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Table 4 Multivariate logistic analysis for D90 at Day 30 as dichotomized variable (model 1: D90 >130 vs. <130 Gy)

From: Prostate volume changes during permanent seed brachytherapy: an analysis of intra-operative variations, predictive factors and clinical implication

 

Factor

Multivariate analysis

Model with edema between

 

Odds ratio

95% CI

P value*

∆ V2 – V1

Baseline volume

1.02

0.96

1.09

0.51

Age

-

-

-

-

Source activity

1.49

0.47

4.92

0.50

V2-V1

1.17

1.02

1.37

0.038

∆ V3 – V1

Baseline volume

1.00

0.95

1.06

0.94

Age

-

-

-

-

Source activity

1.76

0.57

5.69

0.32

V3-V1

1.06

0.95

1.20

0.31

∆ V3 – V2

Baseline volume

1.00

0.94

1.06

0.99

Age

-

-

-

-

Source activity

1.61

0.51

5.25

0.41

Nr of seeds

-

-

-

-

Nr of needles

-

-

-

-

 

V3-V2

0.87

0.72

1.05

0.12

  1. Abbreviations: D90 minimum dose received by 90% of prostate volume at Day 30, ∆ V2-V1 difference between volumes 2 and 1, ∆ V3-V2 difference between volumes 3 and 2, ∆ V3-V1 difference between volumes 3 and 1, CI confidence intervals.* bold when p < 0.05.
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Radiation Oncology

ISSN: 1748-717X

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