borderline significanceP =0.068
Correlation of GP88 levels with clinicopathological parameters Serum GP88 level was not different in PSA level groups (<4 ng vs ≥4 ng) or tumor stage groups (T1/2 vs T3/4) but was different with borderline significance in age groups (≤66 years vs >66 years; P =0.068) in nonparametric tests.