Table 3. Correlation coefficients of QKI-5 with clinicopathological characteristics patients with PCa.

Variable	Correlation coefficient (r)	P
Age at diagnosis	−0.300	0.964
Gleason score	−0.316	<0.001
PSA in serum	−0.220	0.766
Differentiation status	−0.301	<0.001
Depth of invasion	−0.206	0.050
Lymph node metastasis	−0.235	0.010
Distant metastasis	−0.308	<0.001
pTNM stage	−0.260	<0.001

Statistical significance was evaluated by correlation coefficient analysis.