In the low-NA group , response rates were similar between treatments ( escitalopram : @/@ -LSB- @ % -RSB- ; bupropion : @/@ -LSB- @ % -RSB- ; NS ) , while there was a significant advantage for escitalopram in patients with high NA ( escitalopram : @/@ -LSB- @ % -RSB- ; bupropion = @/@ -LSB- @ % -RSB- ; P = @ ) .