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Table 4 Risk of subtype-specific breast cancer in relation to family history of breast cancer compared with benign breast disease control

From: Family history and risk of ductal carcinoma in situ and triple negative breast cancer in a Han Chinese population: a case–control study

Variable

OR (95% CI)a

P a

OR (95% CI)b

P b

Pathology

DCIS

1.27 (0.36 to 4.46)

0.704

1.30 (0.38 to 4.43)

0.679

Invasive cancer

2.22 (1.32 to 3.75)

0.003

2.26 (1.36 to 3.75)

0.002

Tumor sizec

≤2 cm

1.87 (0.92 to 3.80)

0.084

1.94 (0.97 to 3.87)

0.061

>2 cm

2.29 (1.22 to 4.29)

0.010

2.34 (1.28 to 4.30)

0.006

Lymph node involvementc

Negative

2.60 (1.42 to 4.75)

0.002

2.56 (1.43 to 4.57)

0.001

Positive

2.07 (1.05 to 4.08)

0.036

2.14 (1.10 to 4.15)

0.025

Hormone receptor statusc

Negative

3.05 (1.45 to 6.41)

0.003

2.76 (1.35 to 5.64)

0.005

Positive

2.09 (1.16 to 3.78)

0.014

2.19 (1.23 to 3.89)

0.008

Molecular subtypec

Triple negative

3.35 (1.43 to 7.88)

0.005

3.17 (1.38 to 7.28)

0.007

Non-triple negative

2.14 (1.21 to 3.80)

0.009

2.20 (1.27 to 3.82)

0.005

  1. aAdjusted for age at diagnosis, age at menarche, and childbearing; bAdjusted for age at menarche, and childbearing history; cDCIS not included for analysis. CI, confidence interval; DCIS, ductal carcinoma in situ; OR, odds ratio.