Responder rates for both HAM-A and HAM-D scores at 8 weeks were better in the escitalopram group compared to the desvenlafaxine group ( HAM-A 76.92 % vs. 71.05 % ; HAM-D 79.48 % vs 73.68 % ) but the differences were not statistically significant ( P = 0.59 and P = 0.61 ) .