Table 1.

Comparison of S100A8 expression between pre-invasive carcinoma and invasive carcinoma

	Pre-invasive carcinoma	Invasive carcinoma	p value
Total
S100A8+ TC (%)	0.00 (0.00–5.00)	0.00 (0.00–2.63)	0.544
S100A8+ IC (%)	3.00 (1.00–5.00)	4.33 (2.33–8.33)	0.010
HR+ subgroup
S100A8+ TC (%)	0.00 (0.00–0.00)	0.00 (0.00–0.00)	0.228
S100A8+ IC (%)	3.00 (1.00–5.00)	3.33 (1.67–5.00)	0.872
HR- subgroup
S100A8+ TC (%)	10.00 (8.75–36.67)	5.00 (0.00–40.00)	0.081
S100A8+ IC (%)	5.00 (2.00–9.17)	7.67 (4.33–15.00)	0.014

P values are calculated by Mann–Whitney test. Data are presented as median value (interquartile range)

TC tumor cell, IC immune cell, HR hormone receptor