Table 6

Odds ratios (95% confidence interval) of prognostic factors among invasive breast cancers according to molecular phenotype, Nurses' Health Study (1976 to 1996)
Tumour type
 Luminal A
 Luminal B
 Her2 type
 Basal
 Unclassified

n
 OR
 n
 OR (95%CI)
 n
 OR (95%CI)
 n
 OR (95%CI)
 n
 OR (95%CI)
Tumour sizea,b









≤ 2.0 cm
 1025
54
48
107
57
>2.0 cm
 537
 1.0 (Ref)
 55
 1.9 (1.3 to 2.8)
 68
 2.6 (1.8 to 3.9)
 119
 2.0 (1.5 to 2.7)
 44
 1.4 (0.9 to 2.1)











Tumour gradea









Low/Intermediate
 478
26
21
33
16
High
 252
 1.0 (Ref)
 20
 1.4 (0.8 to 2.6)
 43
 3.6 (2.1 to 6.3)
 99
 5.3 (3.5 to 8.1)
 30
 3.4 (1.8 to 6.4)











Nodal statusa,b









No nodes
 1103
72
61
145
70
Any nodes
 547
 1.0 (Ref)
 44
 1.2 (0.8 to 1.7)
 67
 2.1 (1.5 to 3.1)
 100
 1.3 (1.0 to 1.7)
 40
 1.1 (0.7 to 1.6)











Menopausal status









Postmenopausal
 1289
76
97
187
83
Premenopausal
 334
 1.0 (Ref)
 35
 1.8 (1.2 to 2.7)
 27
 1.1 (0.7 to 1.7)
 51
 1.1 (0.8 to 1.5)
 25
 1.2 (0.7 to 1.8)

aAdjusted for age (five-year categories). bTumour characteristics abstracted from medical pathology reports. CI, confidence interval; OR, odds ratio.

Tamimi et al. Breast Cancer Research 2008 10:R67   doi:10.1186/bcr2128

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