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Table 3 Univariate and multivariate prognostic analyses of BCSS in all patients

From: Effect of postoperative radiotherapy in women with localized pure mucinous breast cancer after lumpectomy: a population-based study

Characteristics Univariate Multivariate
HR 95%CI P aHR 95%CI P
Treatment groups
Non-RT 1.00    1.00   
RT 0.51 0.39–0.66  < 0.001 0.64 0.49–0.83 0.001
Age of diagnosis, years
 < 50 1.00    1.00   
50–59 1.08 0.58–2.03 0.803 1.11 0.59–2.10 0.746
60–69 1.46 0.83–2.57 0.192 1.51 0.84–2.68 0.166
 ≥ 70 3.51 2.12–5.80  < 0.001 3.05 1.80–5.17  < 0.001
Era of diagnosis
1998–2004 1.00      
2005–2009 1.04 0.77–1.41 0.789    
2010–2015 0.88 0.55–1.41 0.606    
Race
White 1.00    1.00   
Black 1.49 1.00–2.22 0.047 1.44 0.96–2.15 0.076
Other 0.52 0.30–0.91 0.022 0.70 0.39–1.20 0.213
Marital status
Married 1.00    1.00   
Non-married 0.92 0.56–1.51 0.736 0.98 0.59–1.61 0.931
DSW 2.25 1.71–2.96  < .001 1.56 1.17–2.08 0.002
Unknown 1.90 1.02–3.55 0.045 1.36 0.72–2.56 0.339
Laterality
Left 1.00      
Right 0.95 0.74–1.23 0.690    
Tumor size (T stage), cm
 ≤ 1.0 (T1) 1.00    1.00   
1.1–2.0 (T1) 1.85 1.35–2.53  < 0.001 1.92 1.40–2.63  < .001
2.1–3.0 (T2) 2.95 2.05–4.24  < 0.001 3.02 2.09–4.36  < .001
Tumor grade
I 1.00    1.00   
II 1.35 1.00–1.82 0.049 1.31 0.97–1.77 0.079
III/IV 1.95 1.05–3.63 0.034 1.91 1.02–3.59 0.043
unknown 1.19 0.85–1.68 0.305 1.16 0.83–1.64 0.390
ER status
Positive 1.00      
Negative 1.65 0.78–3.53 0.120    
Unknown 1.24 0.83–1.85 0.300    
PR status
Positive 1.00    1.00   
Negative 1.56 1.08–2.26 0.020 1.47 1.01–2.13 0.045
Unknown 1.37 0.95–1.98 0.100 1.19 0.82–1.72 0.368
Chemotherapy
No/Unknown 1.00      
Yes 0.75 0.46–1.21 0.460    
  1. HR hazard ration, aHR adjust hazard raion, CI confidence interval