Accuracy of serum luteinizing hormone and serum testosterone measurements to assess the efficacy of medical castration in prostate cancer patients

Table 2 Serum LH and testosterone efficacy parameters according to “on versus off LH-RH agonist” in the cohort study

Marker	Sensitivity	Specificity	Efficiency	PPV^a	NPV^b
Serum LH^c	482/488 (98.8)	302/303 (99.7)	784/791 (99.1)	482/483 (99.8)	302/308 (98.1)
Serum testosterone	408/488 (83.6)	191/303 (63.0)	599/791 (75.7)	408/520 (78.5)	191/271 (75.7)

^a PPV Positive predictive value, ^b NPV Negative predictive value, ^c LH Luteinizing hormone

ISSN: 1423-0127