Table 4. Correlation analysis of M-Ki67,C-Ki67 and V-Ki67 counting by Spearman analysis.

Ki67 grades (%)	M-Ki67 vs. C-Ki67	M-Ki67 vs. V-Ki67	C-Ki67 vs. V-Ki67
Low (≤10)	r = 0.671, P < 0.001	r = 0.413, P = 0.023	r = 0.182, P = 0.337
Moderate (>10 and <50)	r = 0.628, P < 0.001	r = 0.415, P = 0.023	r = 0.522, P = 0.003
High (≥50)	r = 0.370, P = 0.044	r = 0.378, P = 0.039	r = 0.324, P = 0.080
Overall grades	r = 0.932, P < 0.001	r = 0.895, P < 0.001	r = 0.874, P < 0.001

M-Ki67: marked Ki67; C-Ki67: computerized Ki67; V-Ki67: visual Ki67.