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Table 3 Generalized estimating equation models of the association between EPIC scores surgery and SBRT patients

From: Comparison of quality of life after stereotactic body radiotherapy and surgery for early-stage prostate cancer

Variable

EPIC urinary

EPIC sexual

EPIC bowel

 

β

SE

p

β

SE

p

β

SE

p

Intercept

98.9668

4.7493

<.0001

133.2671

9.3670

<.0001

103.1127

2.8919

<.0001

Age

−0.0358

0.0695

0.6062

−1.2686

0.1368

<.0001

−0.0954

0.0435

0.0282

Prostate Volume

−0.0209

0.0227

0.3557

−0.0014

0.0382

0.9702

−0.0158

0.0121

0.1927

Risk Group

Low

Ref.

  

Ref.

  

Ref.

  

Intermediate-high

0.7602

1.1711

0.5163

1.2493

2.0884

0.5497

0.6897

0.5534

0.2127

Treatment Group (differences at baseline)

Surgery

Ref.

  

Ref.

  

Ref.

  

SBRT

−6.1083

1.1334

<.0001

11.1251

2.6339

<.0001

−0.2676

0.6838

0.6956

Interaction surgery x time (change from baseline)

Baseline

Ref.

  

Ref.

  

Ref.

  

1 month

−48.5886

3.3500

<.0001

−38.7584

2.7183

<.0001

−2.4796

1.1901

0.0372

6 months

−19.2903

2.1428

<.0001

−34.6929

2.2146

<.0001

−0.2362

0.8788

0.7881

12 months

−13.3859

1.8891

<.0001

−29.6338

2.2676

<.0001

1.1840

0.7165

0.0984

24 months

−14.1136

1.8888

<.0001

−30.1501

2.5436

<.0001

1.4723

0.6095

0.0157

36 months

−12.8108

1.6371

<.0001

−27.3960

2.4127

<.0001

2.6794

0.5251

<.0001

Interaction SBRT x time (differences from surgery in change from baseline)

Baseline

Ref.

  

Ref.

  

Ref.

  

1 month

32.8134

3.3992

<.0001

31.3269

2.8315

<.0001

−18.7600

1.4602

<.0001

6 months

17.8838

2.4335

<.0001

30.6081

2.6451

<.0001

−3.5163

1.4358

0.0143

12 months

11.4988

1.9338

<.0001

26.2387

2.3241

<.0001

−2.6986

1.0348

0.0091

24 months

13.3402

1.9474

<.0001

24.6944

2.6305

<.0001

−1.8731

0.9630

0.0518

36 months

13.6449

1.6969

<.0001

19.8132

2.5509

<.0001

−2.5845

0.6613

<.0001

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Radiation Oncology

ISSN: 1748-717X

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