Table 1 Comparison between mitotic figure counts on haematoxylin and eosin (H&E) and phosphorylated histone H3 (PPH3)‐stained sections in 39 breast adenocarcinomas.

SBR grade	Cases	H&E (MFs per 10 HPF), mean (SE; range)	PPH3 (MFs per 10 HPF), mean (SE; range)	p Value
I	13	3 (0.4; 1–6)	4 (1; 1–15)	NS*
II	13	9 (2; 2–26)	13 (3; 1–42)	NS*
III	13	32 (4; 12–57)	36 (4; 15–74)	NS*

MF, mitotic figures; NS, not significant; SBR, Scarff–Bloom–Richardson.

HPF magnification ×400.

*No statistical difference was found between these two methods (Wilcoxon's non‐parametric paired test).