Table 5 Univariate and multivariate analyses for early recurrence in those receiving endocrine therapy and chemotherapy (early vs no recurrence)

ALDH1, ≤1 %/>1 %

4.054 (1.797–10.080)

<0.001

4.625 (1.881–12.474)

<0.001

Age, ≤50/>50 years

0.612 (0.349–1.067)

0.083

0.623 (0.330–1.164)

0.138

Tumor size, ≤20/>20 mm

2.553 (1.336–5.036)

0.004

2.130 (1.018–4.601)

0.044

Nodal metastasis negative/positive

4.357 (2.430–7.979)

<0.001

3.856 (2.026–7.519)

<0.001

Progesterone receptor staining, <20 %/≥20 %

1.035 (0.593–1.807)

0.903

Not selected

Ki-67 staining, <20 %/≥20 %

1.592 (0.858–2.983)

0.140

0.791 (0.377–1.634)

0.529

Tumor grade 1 or 2/3

2.625 (1.285–5.595)

0.007

2.098 (0.940–4.848)

0.070