Table 2.

Spearman correlation analysis between patient variables

		Gender	Age	Group	Stage
Gender	Correlation Coefficient	1	0.186*	-0.143	-0.127
	Sig. (2-tailed)	NA	0.021	0.076	0.117
	N	154	154	154	154
Age	Correlation Coefficient	0.186 *	1	-0.338 **	-0.254 **
	Sig. (2-tailed)	0.021	NA	0	0.002
	N	154	154	154	154
Group	Correlation Coefficient	-0.143	-0.338 **	1	0.827 **
	Sig. (2-tailed)	0.076	0	NA	0
	N	154	154	154	154
Stage	Correlation Coefficient	-0.127	-0.254 **	0.827 **	1
	Sig. (2-tailed)	0.117	0.002	0	NA
	N	154	154	154	154

*. Correlation is significant at the 0.05 level (2-tailed)

**. Correlation is significant at the 0.01 level (2-tailed)

NA: p-values are not applicable for correlations of variables with themselves (diagonal)

Gender: 1-Female, 2-Male; Age: 1->50, 2-<50; Group: 1-BTG, 2-MTG; Stage: 0-BTG. 1-Stage I, 2-Stage II, 3-Stage III, 4-Stage IV