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Table 3 Multivariate Cox regression analysis of survival outcomes

From: The effects of postoperative radiotherapy on survival outcomes in patients under 65 with estrogen receptor positive tubular breast carcinoma

Variables

BCSS

OS

HR

95% CI

p

HR

95% CI

p

Age (years)

  < 50

1

  

1

  

  ≥ 50

0.708

0.227–2.008

0.552

2.03

1.275–3.231

0.003

Race/ethnicity

 Non-Hispanic white

1

  

1

  

 Non-Hispanic black

1.825

0.225–14.794

0.573

1.162

0.473–2.855

0.744

 Hispanic

–

–

0.992

0.986

0.433–2.245

0.974

 Other

2.167

0.277–16.936

2.167

0.600

0.190–1.892

0.383

Grade

 Well differentiated

1

  

1

  

 Moderately differentiated

–

–

0.986

1.107

0.607–2.019

0.740

 Poorly/undifferentiated

–

–

0.996

1.954

0.614–6.220

0.257

Tumor size

 T1c

1

  

1

  

 T1mic

–

–

0.998

–

–

0.956

 T1a

0.488

0.087–2.736

0.415

0.648

0.385–1.089

0.101

 T1b

1.066

0.319–3.560

0.918

0.943

0.629–1.415

0.778

PR status

 Negative

1

  

1

  

 Positive

0.330

0.112–0.968

0.043

0.712

0.464–1.092

0.120

Chemotherapy

 No/unknown

1

  

1

  

 Yes

2.454

0.489–12.314

0.275

1.781

0.951–3.336

0.071

Radiotherapy

 No

1

  

1

  

 Yes

0.297

0.105–0.836

0.022

0.656

0.441–0.978

0.038

  1. BCSS breast cancer-specific survival, HR hazard ratio, CI confidence interval, OS overall survival, PR progesterone receptor
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Radiation Oncology

ISSN: 1748-717X

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