Potential factors of false-negative sentinel lymph node biopsy for breast cancer and clinical decision-making value of axillary lymph node dissection.

Subgroup analysis (tracer type, molecular subtype) was corrected using Bonferroni, and the corrected P -value threshold was 0.05/2 = 0.025: The original P = 0.037 in the tracer group → adjusted P = 0.074 (with a significant trend), and the original P = 0.033 in the molecular subtype → adjusted P = 0.066 (the differential trend still exists).

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