Table 4 Multi-variate analysis for late GU and GI toxicity grade 2 ≤ using Cox proportional hazards model.

From: Comparison of toxicities between ultrahypofractionated radiotherapy versus brachytherapy with or without external beam radiotherapy for clinically localized prostate cancer

Variable

Strata

GI

GU

HR

95% CI

p-value

HR

95% CI

p-value

Age, years

 ≤ 70

1

(Referent)

1

(Referent)

71 ≤ 

1.31

0.74–2.33

0.35

1.14

0.74–1.75

0.56

T classification

 ≤ 2

1

(Referent)

1

(Referent)

3 ≤ 

0.82

0.38–1.78

0.62

0.8

0.59–1.08

0.15

Gleason score

 ≤ 7

1

(Referent)

1

(Referent)

8 ≤ 

0.7

0.33–1.47

0.34

1.12

0.85–1.48

0.43

Pretreatment PSA (ng/mL)

 ≤ 10

1

(Referent)

1

(Referent)

10 < 

1.23

0.67–2.24

0.51

1.18

0.91–1.52

0.2

Hormonal therapy

No

1

(Referent)

1

(Referent)

Yes

0.64

0.29–1.42

0.27

1.14

0.74–1.75

0.56

Acute toxicty grade 2 ≤ 

No

1

(Referent)

1

(Referent)

Yes

6.76

1.94–23.59

0.0027

2.19

1.69–2.84

 < 0.0001

Treatment modalities

BT ± EBRT

1

(Referent)

1

(Referent)

UHF

2.37

1.04–5.39

0.04

0.76

0.43–1.35

0.35

  1. Bold values indicate statistically significance.
  2. Abbreviations; CI confidence interval, HR hazard ratio, NA not available, DeRT dose escalated radiotherapy, UHF ultrahypofractionated radiotherapy, BT brachytherapy, EBRT external beam radiotherapy, UHF ultrahypofractionated radiotherapy.