Preoperative neoadjuvant chemotherapy in patients with breast cancer evaluated using strain ultrasonic elastography

Table 2 Comparison of general clinical data of patients with different flexibility scores, n (%)

Groups	Elasticity score 4-5	Elasticity score 1-3	t value	P value
Cases	57	33
Age (yr)	50.06 ± 8.02	50.82 ± 9.11	-0.412	0.681
ER positive	35 (61.40)	18 (54.55)	0.406	0.524
PR positive	30 (52.63)	16 (48.48)	0.144	0.705
Ki-67 > 14%	32 (56.14)	19 (57.58)	0.018	0.895
HER2 positive	14 (24.56)	5 (15.15)	1.111	0.292
Lesion diameter (cm)	4.35 ± 1.13	4.30 ± 1.10	0.204	0.839

ER: Estrogen receptor; PR: Progesterone receptor; HER2: Human epidermal growth factor receptor 2.