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Table 5 Association between ever vs. never smoking and breast cancer subtypes in 21,831 women from Danish Nurse Cohort

From: Active smoking and risk of breast cancer in a Danish nurse cohort study

  

Never

Former

Current

Ever

N

Ref.

HR (95% CI)

HR (95% CI)

HR (95% CI)

Estrogen Receptor (ER) Status

 ER +

851

1.00

1.06 (0.89–1.26)

1.28 (1.09–1.51)

1.17 (1.01–1.36)

 ER -

172

1.00

1.11 (0.77–1.62)

1.11 (0.77–1.61)

1.11 (0.81–1.53)

Receptor Status

 ER+/PR+

366

1.00

1.17 (0.90–1.53)

1.36 (1.06–1.76)

1.27 (1.02–1.59)

 ER+/PR-

111

1.00

1.56 (0.94–2.59)

1.92 (1.19–3.10)

1.75 (1.12–2.71)

 ER−/PR-

107

1.00

1.01 (0.63–1.63)

1.15 (0.73–1.82)

1.08 (0.72–1.61)

 ER−/PR+

10

1.00

1.76 (0.41–7.56)

0.49 (0.08–3.01)

1.02 (0.26–4.07)