In the low-NA group , response rates were similar between treatments ( escitalopram : 28/42 [ 67 % ] ; bupropion : 23/40 [ 58 % ] ; NS ) , while there was a significant advantage for escitalopram in patients with high NA ( escitalopram : 24/40 [ 60 % ] ; bupropion = 14/41 [ 34 % ] ; P = .017 ) .