Table 5.

Cathepsin K immunohistochemical expression concerning the status of nodal involvement using Pearson chi-square test

Nodal involvement	Cathepsin K		Total	Pearson Chi-Square Asymp. Sig. (2-sided)
	negative or weak expression	moderate or strong expression
positive nodal involvement % within Nodal involvement	6	20	26	.041
	23.1%	76.9%	100.0%
negative nodal involvement % within Nodal involvement	10	9	19
	52.6%	47.4%	100.0%
Total % within Nodal involvement	16	29	45
	35.6%	64.4%	100.0%

The mean difference is significant at the 0.05 level, Pearson Chi square test