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Table 4 Relationship between demographic/histopathologic features and pre-NAC tumor size

From: Role of 18 fluorine-fluorodeoxyglucose positron emission tomography/computed tomography in assessment of neoadjuvant chemotherapy response in breast cancer patients

Characteristics Pre-NAC tumor size P value
Mean SD Range Median
Age (years)
 ≤ median 54 3.38 1.43 1.6–6.6 3.6 a0.917
 > median 54 3.57 1.31 1.7–5.7 3.5  
Menopausal status
 Pre-menopause 3.92 1.48 1.6–6.6 4 a0.341
 Post-menopause 3.42 1.26 1.6–5.7 3.3  
Tumor grade
 II 3.43 1.26 1.6–5.7 3.6 0.305
 III 3.94 1.49 2–6.6 3.9  
Tumor molecular type
 Luminal A 3.8 1.3 1.6–6.6 3.8 b0.582
 Luminal B 3.3 1.5 1.7–5.7 2.9  
 HER-2 + 3.2 1.9 1.6–5.7 2.8  
 Basal type 4.0 1.2 2.5-5 4.8  
  1. a Mann-Whitney U test
  2. b Kruskal-Wallis test (KW)