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Table 1 Association of ALDH1 status with clinicopathological charateristics, stratified by age*.

From: Age determines the prognostic role of the cancer stem cell marker aldehyde dehydrogenase-1 in breast cancer

Characteristic Patients < 65 years Patients > 65 years
  ALDH1 negative ALDH1 positive   ALDH1 negative ALDH1 positive  
  N % N % P N % N % P
Grade      0.02      0.79
I 19 17.3 18 8.5   11 12.9 13 16.2  
II 58 52.7 103 48.6   44 51.8 38 47.5  
III 33 30.0 91 42.9   30 35.3 29 36.2  
Histological type      0.42      0.20
Ductal 103 92.8 191 90.1   72 84.7 73 91.2  
Lobular 8 7.2 21 9.9   13 15.3 7 8.7  
Tumor size      0.34      0.55
T1 45 40.2 74 36.1   27 31.0 24 31.6  
T2 57 50.9 101 49.3   48 55.2 37 48.7  
T3/4 10 8.9 30 14.6   12 13.8 15 19.7  
Nodal status      0.02      0.71
Negative 69 62.2 101 47.9   46 56.1 46 59.0  
Positive 42 37.8 110 52.1   36 43.9 32 41.0  
ER status      0.61      0.01
Negative 43 41.0 91 44.0   16 19.0 30 38.0  
Positive 62 59.0 116 56.0   68 81.0 49 62.0  
PgR status      0.77      0.08
Negative 48 47.1 84 40.6   26 31.3 35 44.9  
Positive 54 52.9 123 59.4   57 68.7 43 55.1  
HER2 status      0.99      0.80
Negative 67 87.0 153 86.9   61 93.8 64 92.8  
Positive 10 13.0 23 13.1   4 6.2 5 7.2  
  1. *Missing data not shown.
  2. Abbreviations: N number of patients; ALDH1 aldehyde dehydrogenase 1; ER estrogen receptor; PgR progesterone receptor; HER2 human epidermal growth factor receptor 2