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Table 1 Patients’ characteristics

From: The association between smoking and breast cancer characteristics and outcome

Population No. patients All Hx smokinga Current Smokinga Pack years
(662) Yes (173) No (439) P value Yes (101) No (508) P value ≥30 (66) 0–29 (518) P value
Median Age (range) 61 (34–85) 60 (36–83) 60 (34–85) 0.449 56 (36–75) 61 (34–85) <0.001 62 (43–83) 60 (34–85) 0.197
Ethnicity
 Ashkenazi 49.5% 46.5% 50.1% 0.165 43.9% 50.0% 0.449 52.3% 49.5% 0.188
 Sephardic 41.5% 47.6% 39.1%   49.0% 40.1%   46.2% 40.0%  
 Arab 2.1% 0.6% 2.8%   1.0% 2.4%   1.5% 2.2%  
 Other 7% 5.3% 8.0%   6.1% 7.5%   0% 8.3%  
 Family Hx of breast cancer (yes, %) 39.7% 38% 40.3% 0.608 42.4% 39.3% 0.564 38.5% 40.4% 0.764
 Postmenopausal (yes, %) 78% 76.7% 77.4% 0.914 64.4% 79.7% 0.002 85.1% 76.4% 0.122
 Hx of HRT usage 21.8% 23.4% 22.2% 0.746 21% 22.8% 0.793 29.2% 21.7% 0.206
  1. aData regarding smoking was retrieved during the first visit at the oncologist clinic. Current smokers were defined as patients who actively smoked at the time of breast cancer diagnosis. Patients with history of smoking were defined as ever smoker
  2. Abbreviations: HRT hormonal replacement therapy; Hx-history
  3. - Data were not available for: Ethnicity (n = 34); Family history (n = 19); HRT usage (n = 41); Hx smoking (n = 49); Menopausal status (n = 28); PY (n = 77); smoking status (n = 52)
  4. - Cohort included patients with ER positive, HER2 negative disease