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. 2021 Jan 26;10:605750. doi: 10.3389/fonc.2020.605750

Table 2.

Univariate analysis of prognostic factors for locoregional recurrence, distant metastasis, disease-free survival and overall survival.

Characteristic LRR DM DFS OS
Hazard ratio(95%CI) P Hazard ratio(95%CI) P Hazard ratio(95%CI) P Hazard ratio(95%CI) P
Treatment period (years)
2008–2013 1.00 1.00 1.00 1.00
2014–2016 0.55 (0.29–1.05) .066 0.63 (0.44–0.90) .010 0.62 (0.44–0.88) .006 0.62 (0.39–0.98) .041
Age (years)
<40 1.00 1.00 1.00 1.00
≥40 0.70 (0.40–1.22) .213 0.60 (0.44–0.82) .002 0.62 (0.46–0.85) .002 0.77 (0.53–1.12) .167
Stage
II–IIIA 1.00 1.00 1.00 1.00
IIIB–IIIC 1.58 (0.99–2.53) .055 1.99 (1.52–2.62) <.001 1.98 (1.53–2.57) <.001 2.26 (1.66–3.08) <.001
Lymphovascular invasion
No 1.00 1.00 1.00 1.00
Yes 1.54 (0.96–2.48) .077 1.26 (0.95–1.67) .110 1.24 (0.95–1.63) .112 1.38 (1.01–1.90) .045
Histology grade
I–II 1.00 1.00 1.00 1.00
III 1.17 (0.69–1.98) .562 1.01 (0.74–1.38) .932 1.05 (0.78–1.41) .738 1.33 (0.94–1.87) .101
Hormonal receptor
Negative 1.00 1.00 1.00 1.00
Positive 0.57 (0.33–0.96) .034 0.75 (0.54–1.04) .080 0.72 (0.53–0.98) .039 0.51 (0.36–0.72) <.001
Neoadjuvant chemotherapy
No 1.00 1.00 1.00 1.00
Yes 1.65 (1.01–2.71) .047 1.41 (1.05–1.89) .024 1.43 (1.08–1.90) .014 1.59 (1.15–2.21) .005
Radiation fractionation
HFRT 1.00 1.00 1.00
CFRT 0.80 (0.50–1.29) .363 1.09 (0.83–1.43) .531 1.07 (0.83–1.39) .60 1.06 (0.78–1.44) .713
Hormonal therapy
No 1.00 1.00 1.00 1.00
Yes 0.46 (0.28–0.77) .003 0.79 (0.51–0.94) .019 0.66 (0.49–0.88) .005 1.06 (0.99–1.14) <.001
HER2 and trastuzumab .008 .001 .001 .089
HER2 1.00 1.00 1.00 1.00
HER2+ + T 0.86 (0.42–1.77) .681 0.72 (0.47–1.10) .125 0.81 (0.54–1.19) .277 0.90 (0.57–1.41) .638
HER2+ − T 2.28 (1.31–3.95) .003 1.67 (1.18–2.35) .003 1.73 (1.25–2.40) .001 1.52 (1.03–2.26) .037

LRR, locoregional recurrence; DM, distant metastasis; DFS, disease-free survival; OS, overall survival; HFRT, hypofractionated radiation therapy; CFRT, conventional fractionated radiation therapy; HER2, human epidermal growth factor receptor 2; HER2, HER2-negative; HER2+ + T, HER2-positive with trastuzumab; HER2+ − T, HER2-positive without trastuzumab.