Table 9.

Cathepsin K immunohistochemical expression concerning the incidence of recurrence using Pearson chi-square test

Incidence of recurrence	Cathepsin K		Total	Pearson Chi-Square Asymp. Sig. (2-sided)
	negative or weak expression	moderate or strong expression
Present % within recurrence	2	15	17	.009
	11.8%	88.2%	100.0%
Absent % within recurrence	14	14	28
	50.0%	50.0%	100.0%
Total % within recurrence	16	29	45
	35.6%	64.4%	100.0%

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