KLK3 and metastatic neoplasm: The final set of adjustment factors were age (as reported; no transformations or imputation); PSA (log transformed; five missing values imputed); WHO performance status (1 vs 0; 19 missing values imputed); Gleason sum score (6 vs else, 7 vs else, 8 vs else, 9 vs else, 10 vs else; 222 missing values imputed), and timing of metastatic disease status (synchronous vs metachronous; six missing values imputed).