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Table 3 Odds ratios of breast cancer risk by cytological categories and presence of epithelial cells in NAF, Sartorius Cohort 1970–1991.

From: Epithelial cells in nipple aspirate fluid and subsequent breast cancer risk: A historic prospective study

Breast cancer by cytology: In model: N = 946 # with breast cancer n % OR 95% CI p-value
No fluid 63 714 9% 1.0 (referent)  
Fluid without epithelial cells 2 19 11% 1.4 0.32–6.4 0.64
Normal 11 89 12% 1.7 0.87–3.5 0.12
Hyperplasia or atypia 17 124 14% 2.0 1.1–3.6 0.02
Any epithelial cells:       
No fluid/insufficient specimen 65 733 9% 1.0 (referent)  
Unable to classify, normal, hyperplasia, atypia 28 213 13% 1.9 1.2–3.1 0.01
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