Table 4 Total testosterone levels (nmol/l), means and s.d. after start, first and second treatment

From: Improvement of erectile function with Prelox: a randomized, double-blind, placebo-controlled, crossover trial

  Group A Statistical significance Group B Statistical significance Comparison
Start 17.51 (3.7)   18.13 (2.4)   
   P<0.02   P<0.00005 1 vs 2
First treatment 18.3 (3.1)   22.0 (2.6)   
   P<0.000005   P<0.000005 2 vs 3
Second treatment 22.2 (2.9)   19.3 (2.1)