Table 2 Adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for site-specific distant metastases by clinical and pathological factors.

From: Patterns and prognostic implications of distant metastasis in breast Cancer based on SEER population data

Variable

Bone OR (95% CI)

Liver OR (95% CI)

Lung OR (95% CI)

Brain OR (95% CI)

Age ≤ 40 vs. 41–60

1.55 (1.38–1.74)

1.55 (1.38–1.74)

0.98 (0.86–1.12)

1.09 (0.85–1.40)

Age > 60 vs. 41–60

0.91 (0.87–0.96)

0.65 (0.59–0.71)

1.09 (1.01–1.18)

0.75 (0.63–0.89)

Grade III vs. Grade I

1.22 (1.13–1.33)

1.60 (1.38–1.85)

1.36 (1.22–1.52)

1.71 (1.29–2.28)

Grade II vs. Grade I

1.10 (1.03–1.18)

1.23 (1.08–1.41)

1.14 (1.03–1.27)

1.34 (1.03–1.76)

Axillary tail vs. UOQ

1.35 (1.16–1.56)

1.48 (1.16–1.88)

1.20 (0.97–1.48)

1.46 (0.93–2.28)

Unspecified site vs. UOQ

1.42 (1.30–1.56)

1.61 (1.39–1.87)

1.33 (1.16–1.52)

1.57 (1.19–2.06)

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